Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 6 | * |
| 7 | * This software is available to you under a choice of one of two |
| 8 | * licenses. You may choose to be licensed under the terms of the GNU |
| 9 | * General Public License (GPL) Version 2, available from the file |
| 10 | * COPYING in the main directory of this source tree, or the |
| 11 | * OpenIB.org BSD license below: |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms, with or |
| 14 | * without modification, are permitted provided that the following |
| 15 | * conditions are met: |
| 16 | * |
| 17 | * - Redistributions of source code must retain the above |
| 18 | * copyright notice, this list of conditions and the following |
| 19 | * disclaimer. |
| 20 | * |
| 21 | * - Redistributions in binary form must reproduce the above |
| 22 | * copyright notice, this list of conditions and the following |
| 23 | * disclaimer in the documentation and/or other materials |
| 24 | * provided with the distribution. |
| 25 | * |
| 26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 33 | * SOFTWARE. |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 34 | */ |
| 35 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 36 | #include <linux/file.h> |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 37 | #include <linux/fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 38 | #include <linux/slab.h> |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 39 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 40 | #include <asm/uaccess.h> |
| 41 | |
| 42 | #include "uverbs.h" |
| 43 | |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 44 | static struct lock_class_key pd_lock_key; |
| 45 | static struct lock_class_key mr_lock_key; |
| 46 | static struct lock_class_key cq_lock_key; |
| 47 | static struct lock_class_key qp_lock_key; |
| 48 | static struct lock_class_key ah_lock_key; |
| 49 | static struct lock_class_key srq_lock_key; |
Sean Hefty | 53d0bd1 | 2011-05-24 08:33:46 -0700 | [diff] [blame] | 50 | static struct lock_class_key xrcd_lock_key; |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 51 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 52 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
| 53 | do { \ |
| 54 | (udata)->inbuf = (void __user *) (ibuf); \ |
| 55 | (udata)->outbuf = (void __user *) (obuf); \ |
| 56 | (udata)->inlen = (ilen); \ |
| 57 | (udata)->outlen = (olen); \ |
| 58 | } while (0) |
| 59 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 60 | /* |
| 61 | * The ib_uobject locking scheme is as follows: |
| 62 | * |
| 63 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it |
| 64 | * needs to be held during all idr operations. When an object is |
| 65 | * looked up, a reference must be taken on the object's kref before |
| 66 | * dropping this lock. |
| 67 | * |
| 68 | * - Each object also has an rwsem. This rwsem must be held for |
| 69 | * reading while an operation that uses the object is performed. |
| 70 | * For example, while registering an MR, the associated PD's |
| 71 | * uobject.mutex must be held for reading. The rwsem must be held |
| 72 | * for writing while initializing or destroying an object. |
| 73 | * |
| 74 | * - In addition, each object has a "live" flag. If this flag is not |
| 75 | * set, then lookups of the object will fail even if it is found in |
| 76 | * the idr. This handles a reader that blocks and does not acquire |
| 77 | * the rwsem until after the object is destroyed. The destroy |
| 78 | * operation will set the live flag to 0 and then drop the rwsem; |
| 79 | * this will allow the reader to acquire the rwsem, see that the |
| 80 | * live flag is 0, and then drop the rwsem and its reference to |
| 81 | * object. The underlying storage will not be freed until the last |
| 82 | * reference to the object is dropped. |
| 83 | */ |
| 84 | |
| 85 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 86 | struct ib_ucontext *context, struct lock_class_key *key) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 87 | { |
| 88 | uobj->user_handle = user_handle; |
| 89 | uobj->context = context; |
| 90 | kref_init(&uobj->ref); |
| 91 | init_rwsem(&uobj->mutex); |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 92 | lockdep_set_class(&uobj->mutex, key); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 93 | uobj->live = 0; |
| 94 | } |
| 95 | |
| 96 | static void release_uobj(struct kref *kref) |
| 97 | { |
| 98 | kfree(container_of(kref, struct ib_uobject, ref)); |
| 99 | } |
| 100 | |
| 101 | static void put_uobj(struct ib_uobject *uobj) |
| 102 | { |
| 103 | kref_put(&uobj->ref, release_uobj); |
| 104 | } |
| 105 | |
| 106 | static void put_uobj_read(struct ib_uobject *uobj) |
| 107 | { |
| 108 | up_read(&uobj->mutex); |
| 109 | put_uobj(uobj); |
| 110 | } |
| 111 | |
| 112 | static void put_uobj_write(struct ib_uobject *uobj) |
| 113 | { |
| 114 | up_write(&uobj->mutex); |
| 115 | put_uobj(uobj); |
| 116 | } |
| 117 | |
| 118 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) |
Roland Dreier | 3463175 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 119 | { |
| 120 | int ret; |
| 121 | |
| 122 | retry: |
| 123 | if (!idr_pre_get(idr, GFP_KERNEL)) |
| 124 | return -ENOMEM; |
| 125 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 126 | spin_lock(&ib_uverbs_idr_lock); |
Roland Dreier | 3463175 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 127 | ret = idr_get_new(idr, uobj, &uobj->id); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 128 | spin_unlock(&ib_uverbs_idr_lock); |
Roland Dreier | 3463175 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 129 | |
| 130 | if (ret == -EAGAIN) |
| 131 | goto retry; |
| 132 | |
| 133 | return ret; |
| 134 | } |
| 135 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 136 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
| 137 | { |
| 138 | spin_lock(&ib_uverbs_idr_lock); |
| 139 | idr_remove(idr, uobj->id); |
| 140 | spin_unlock(&ib_uverbs_idr_lock); |
| 141 | } |
| 142 | |
| 143 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, |
| 144 | struct ib_ucontext *context) |
| 145 | { |
| 146 | struct ib_uobject *uobj; |
| 147 | |
| 148 | spin_lock(&ib_uverbs_idr_lock); |
| 149 | uobj = idr_find(idr, id); |
Roland Dreier | cbfb50e | 2007-10-19 20:01:43 -0700 | [diff] [blame] | 150 | if (uobj) { |
| 151 | if (uobj->context == context) |
| 152 | kref_get(&uobj->ref); |
| 153 | else |
| 154 | uobj = NULL; |
| 155 | } |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 156 | spin_unlock(&ib_uverbs_idr_lock); |
| 157 | |
| 158 | return uobj; |
| 159 | } |
| 160 | |
| 161 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 162 | struct ib_ucontext *context, int nested) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 163 | { |
| 164 | struct ib_uobject *uobj; |
| 165 | |
| 166 | uobj = __idr_get_uobj(idr, id, context); |
| 167 | if (!uobj) |
| 168 | return NULL; |
| 169 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 170 | if (nested) |
| 171 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); |
| 172 | else |
| 173 | down_read(&uobj->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 174 | if (!uobj->live) { |
| 175 | put_uobj_read(uobj); |
| 176 | return NULL; |
| 177 | } |
| 178 | |
| 179 | return uobj; |
| 180 | } |
| 181 | |
| 182 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, |
| 183 | struct ib_ucontext *context) |
| 184 | { |
| 185 | struct ib_uobject *uobj; |
| 186 | |
| 187 | uobj = __idr_get_uobj(idr, id, context); |
| 188 | if (!uobj) |
| 189 | return NULL; |
| 190 | |
| 191 | down_write(&uobj->mutex); |
| 192 | if (!uobj->live) { |
| 193 | put_uobj_write(uobj); |
| 194 | return NULL; |
| 195 | } |
| 196 | |
| 197 | return uobj; |
| 198 | } |
| 199 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 200 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
| 201 | int nested) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 202 | { |
| 203 | struct ib_uobject *uobj; |
| 204 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 205 | uobj = idr_read_uobj(idr, id, context, nested); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 206 | return uobj ? uobj->object : NULL; |
| 207 | } |
| 208 | |
| 209 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) |
| 210 | { |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 211 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | static void put_pd_read(struct ib_pd *pd) |
| 215 | { |
| 216 | put_uobj_read(pd->uobject); |
| 217 | } |
| 218 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 219 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 220 | { |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 221 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | static void put_cq_read(struct ib_cq *cq) |
| 225 | { |
| 226 | put_uobj_read(cq->uobject); |
| 227 | } |
| 228 | |
| 229 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) |
| 230 | { |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 231 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | static void put_ah_read(struct ib_ah *ah) |
| 235 | { |
| 236 | put_uobj_read(ah->uobject); |
| 237 | } |
| 238 | |
| 239 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) |
| 240 | { |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 241 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 242 | } |
| 243 | |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 244 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
| 245 | { |
| 246 | struct ib_uobject *uobj; |
| 247 | |
| 248 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); |
| 249 | return uobj ? uobj->object : NULL; |
| 250 | } |
| 251 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 252 | static void put_qp_read(struct ib_qp *qp) |
| 253 | { |
| 254 | put_uobj_read(qp->uobject); |
| 255 | } |
| 256 | |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 257 | static void put_qp_write(struct ib_qp *qp) |
| 258 | { |
| 259 | put_uobj_write(qp->uobject); |
| 260 | } |
| 261 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 262 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
| 263 | { |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 264 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static void put_srq_read(struct ib_srq *srq) |
| 268 | { |
| 269 | put_uobj_read(srq->uobject); |
| 270 | } |
| 271 | |
Sean Hefty | 53d0bd1 | 2011-05-24 08:33:46 -0700 | [diff] [blame] | 272 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
| 273 | struct ib_uobject **uobj) |
| 274 | { |
| 275 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); |
| 276 | return *uobj ? (*uobj)->object : NULL; |
| 277 | } |
| 278 | |
| 279 | static void put_xrcd_read(struct ib_uobject *uobj) |
| 280 | { |
| 281 | put_uobj_read(uobj); |
| 282 | } |
| 283 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 284 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
| 285 | const char __user *buf, |
| 286 | int in_len, int out_len) |
| 287 | { |
| 288 | struct ib_uverbs_get_context cmd; |
| 289 | struct ib_uverbs_get_context_resp resp; |
| 290 | struct ib_udata udata; |
| 291 | struct ib_device *ibdev = file->device->ib_dev; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 292 | struct ib_ucontext *ucontext; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 293 | struct file *filp; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 294 | int ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 295 | |
| 296 | if (out_len < sizeof resp) |
| 297 | return -ENOSPC; |
| 298 | |
| 299 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 300 | return -EFAULT; |
| 301 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 302 | mutex_lock(&file->mutex); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 303 | |
| 304 | if (file->ucontext) { |
| 305 | ret = -EINVAL; |
| 306 | goto err; |
| 307 | } |
| 308 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 309 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 310 | (unsigned long) cmd.response + sizeof resp, |
| 311 | in_len - sizeof cmd, out_len - sizeof resp); |
| 312 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 313 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
Ganapathi CH | 77f7601 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 314 | if (IS_ERR(ucontext)) { |
Roel Kluin | df42245 | 2009-12-09 14:30:44 -0800 | [diff] [blame] | 315 | ret = PTR_ERR(ucontext); |
Ganapathi CH | 77f7601 | 2006-06-17 20:37:40 -0700 | [diff] [blame] | 316 | goto err; |
| 317 | } |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 318 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 319 | ucontext->device = ibdev; |
| 320 | INIT_LIST_HEAD(&ucontext->pd_list); |
| 321 | INIT_LIST_HEAD(&ucontext->mr_list); |
| 322 | INIT_LIST_HEAD(&ucontext->mw_list); |
| 323 | INIT_LIST_HEAD(&ucontext->cq_list); |
| 324 | INIT_LIST_HEAD(&ucontext->qp_list); |
| 325 | INIT_LIST_HEAD(&ucontext->srq_list); |
| 326 | INIT_LIST_HEAD(&ucontext->ah_list); |
Sean Hefty | 53d0bd1 | 2011-05-24 08:33:46 -0700 | [diff] [blame] | 327 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 328 | ucontext->closing = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 329 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 330 | resp.num_comp_vectors = file->device->num_comp_vectors; |
| 331 | |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 332 | ret = get_unused_fd(); |
| 333 | if (ret < 0) |
| 334 | goto err_free; |
| 335 | resp.async_fd = ret; |
| 336 | |
| 337 | filp = ib_uverbs_alloc_event_file(file, 1); |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 338 | if (IS_ERR(filp)) { |
| 339 | ret = PTR_ERR(filp); |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 340 | goto err_fd; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 341 | } |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 342 | |
| 343 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 344 | &resp, sizeof resp)) { |
| 345 | ret = -EFAULT; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 346 | goto err_file; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 347 | } |
| 348 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 349 | file->async_file = filp->private_data; |
| 350 | |
| 351 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, |
| 352 | ib_uverbs_event_handler); |
| 353 | ret = ib_register_event_handler(&file->event_handler); |
| 354 | if (ret) |
| 355 | goto err_file; |
| 356 | |
| 357 | kref_get(&file->async_file->ref); |
| 358 | kref_get(&file->ref); |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 359 | file->ucontext = ucontext; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 360 | |
| 361 | fd_install(resp.async_fd, filp); |
| 362 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 363 | mutex_unlock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 364 | |
| 365 | return in_len; |
| 366 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 367 | err_file: |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 368 | fput(filp); |
| 369 | |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 370 | err_fd: |
| 371 | put_unused_fd(resp.async_fd); |
| 372 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 373 | err_free: |
| 374 | ibdev->dealloc_ucontext(ucontext); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 375 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 376 | err: |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 377 | mutex_unlock(&file->mutex); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 378 | return ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
| 382 | const char __user *buf, |
| 383 | int in_len, int out_len) |
| 384 | { |
| 385 | struct ib_uverbs_query_device cmd; |
| 386 | struct ib_uverbs_query_device_resp resp; |
| 387 | struct ib_device_attr attr; |
| 388 | int ret; |
| 389 | |
| 390 | if (out_len < sizeof resp) |
| 391 | return -ENOSPC; |
| 392 | |
| 393 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 394 | return -EFAULT; |
| 395 | |
| 396 | ret = ib_query_device(file->device->ib_dev, &attr); |
| 397 | if (ret) |
| 398 | return ret; |
| 399 | |
| 400 | memset(&resp, 0, sizeof resp); |
| 401 | |
| 402 | resp.fw_ver = attr.fw_ver; |
Sean Hefty | cf311cd | 2006-01-10 07:39:34 -0800 | [diff] [blame] | 403 | resp.node_guid = file->device->ib_dev->node_guid; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 404 | resp.sys_image_guid = attr.sys_image_guid; |
| 405 | resp.max_mr_size = attr.max_mr_size; |
| 406 | resp.page_size_cap = attr.page_size_cap; |
| 407 | resp.vendor_id = attr.vendor_id; |
| 408 | resp.vendor_part_id = attr.vendor_part_id; |
| 409 | resp.hw_ver = attr.hw_ver; |
| 410 | resp.max_qp = attr.max_qp; |
| 411 | resp.max_qp_wr = attr.max_qp_wr; |
| 412 | resp.device_cap_flags = attr.device_cap_flags; |
| 413 | resp.max_sge = attr.max_sge; |
| 414 | resp.max_sge_rd = attr.max_sge_rd; |
| 415 | resp.max_cq = attr.max_cq; |
| 416 | resp.max_cqe = attr.max_cqe; |
| 417 | resp.max_mr = attr.max_mr; |
| 418 | resp.max_pd = attr.max_pd; |
| 419 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; |
| 420 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; |
| 421 | resp.max_res_rd_atom = attr.max_res_rd_atom; |
| 422 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; |
| 423 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; |
| 424 | resp.atomic_cap = attr.atomic_cap; |
| 425 | resp.max_ee = attr.max_ee; |
| 426 | resp.max_rdd = attr.max_rdd; |
| 427 | resp.max_mw = attr.max_mw; |
| 428 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; |
| 429 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; |
| 430 | resp.max_mcast_grp = attr.max_mcast_grp; |
| 431 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; |
| 432 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; |
| 433 | resp.max_ah = attr.max_ah; |
| 434 | resp.max_fmr = attr.max_fmr; |
| 435 | resp.max_map_per_fmr = attr.max_map_per_fmr; |
| 436 | resp.max_srq = attr.max_srq; |
| 437 | resp.max_srq_wr = attr.max_srq_wr; |
| 438 | resp.max_srq_sge = attr.max_srq_sge; |
| 439 | resp.max_pkeys = attr.max_pkeys; |
| 440 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; |
| 441 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; |
| 442 | |
| 443 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 444 | &resp, sizeof resp)) |
| 445 | return -EFAULT; |
| 446 | |
| 447 | return in_len; |
| 448 | } |
| 449 | |
| 450 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, |
| 451 | const char __user *buf, |
| 452 | int in_len, int out_len) |
| 453 | { |
| 454 | struct ib_uverbs_query_port cmd; |
| 455 | struct ib_uverbs_query_port_resp resp; |
| 456 | struct ib_port_attr attr; |
| 457 | int ret; |
| 458 | |
| 459 | if (out_len < sizeof resp) |
| 460 | return -ENOSPC; |
| 461 | |
| 462 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 463 | return -EFAULT; |
| 464 | |
| 465 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); |
| 466 | if (ret) |
| 467 | return ret; |
| 468 | |
| 469 | memset(&resp, 0, sizeof resp); |
| 470 | |
| 471 | resp.state = attr.state; |
| 472 | resp.max_mtu = attr.max_mtu; |
| 473 | resp.active_mtu = attr.active_mtu; |
| 474 | resp.gid_tbl_len = attr.gid_tbl_len; |
| 475 | resp.port_cap_flags = attr.port_cap_flags; |
| 476 | resp.max_msg_sz = attr.max_msg_sz; |
| 477 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; |
| 478 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; |
| 479 | resp.pkey_tbl_len = attr.pkey_tbl_len; |
| 480 | resp.lid = attr.lid; |
| 481 | resp.sm_lid = attr.sm_lid; |
| 482 | resp.lmc = attr.lmc; |
| 483 | resp.max_vl_num = attr.max_vl_num; |
| 484 | resp.sm_sl = attr.sm_sl; |
| 485 | resp.subnet_timeout = attr.subnet_timeout; |
| 486 | resp.init_type_reply = attr.init_type_reply; |
| 487 | resp.active_width = attr.active_width; |
| 488 | resp.active_speed = attr.active_speed; |
| 489 | resp.phys_state = attr.phys_state; |
Eli Cohen | 2420b60 | 2010-10-18 14:45:20 -0700 | [diff] [blame] | 490 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
| 491 | cmd.port_num); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 492 | |
| 493 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 494 | &resp, sizeof resp)) |
| 495 | return -EFAULT; |
| 496 | |
| 497 | return in_len; |
| 498 | } |
| 499 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 500 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
| 501 | const char __user *buf, |
| 502 | int in_len, int out_len) |
| 503 | { |
| 504 | struct ib_uverbs_alloc_pd cmd; |
| 505 | struct ib_uverbs_alloc_pd_resp resp; |
| 506 | struct ib_udata udata; |
| 507 | struct ib_uobject *uobj; |
| 508 | struct ib_pd *pd; |
| 509 | int ret; |
| 510 | |
| 511 | if (out_len < sizeof resp) |
| 512 | return -ENOSPC; |
| 513 | |
| 514 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 515 | return -EFAULT; |
| 516 | |
| 517 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 518 | (unsigned long) cmd.response + sizeof resp, |
| 519 | in_len - sizeof cmd, out_len - sizeof resp); |
| 520 | |
| 521 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 522 | if (!uobj) |
| 523 | return -ENOMEM; |
| 524 | |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 525 | init_uobj(uobj, 0, file->ucontext, &pd_lock_key); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 526 | down_write(&uobj->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 527 | |
| 528 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, |
| 529 | file->ucontext, &udata); |
| 530 | if (IS_ERR(pd)) { |
| 531 | ret = PTR_ERR(pd); |
| 532 | goto err; |
| 533 | } |
| 534 | |
| 535 | pd->device = file->device->ib_dev; |
| 536 | pd->uobject = uobj; |
| 537 | atomic_set(&pd->usecnt, 0); |
| 538 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 539 | uobj->object = pd; |
| 540 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 541 | if (ret) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 542 | goto err_idr; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 543 | |
| 544 | memset(&resp, 0, sizeof resp); |
| 545 | resp.pd_handle = uobj->id; |
| 546 | |
| 547 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 548 | &resp, sizeof resp)) { |
| 549 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 550 | goto err_copy; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 551 | } |
| 552 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 553 | mutex_lock(&file->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 554 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 555 | mutex_unlock(&file->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 556 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 557 | uobj->live = 1; |
| 558 | |
| 559 | up_write(&uobj->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 560 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 561 | return in_len; |
| 562 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 563 | err_copy: |
| 564 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 565 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 566 | err_idr: |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 567 | ib_dealloc_pd(pd); |
| 568 | |
| 569 | err: |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 570 | put_uobj_write(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 571 | return ret; |
| 572 | } |
| 573 | |
| 574 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, |
| 575 | const char __user *buf, |
| 576 | int in_len, int out_len) |
| 577 | { |
| 578 | struct ib_uverbs_dealloc_pd cmd; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 579 | struct ib_uobject *uobj; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 580 | int ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 581 | |
| 582 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 583 | return -EFAULT; |
| 584 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 585 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
| 586 | if (!uobj) |
| 587 | return -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 588 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 589 | ret = ib_dealloc_pd(uobj->object); |
| 590 | if (!ret) |
| 591 | uobj->live = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 592 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 593 | put_uobj_write(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 594 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 595 | if (ret) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 596 | return ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 597 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 598 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 599 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 600 | mutex_lock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 601 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 602 | mutex_unlock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 603 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 604 | put_uobj(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 605 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 606 | return in_len; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 607 | } |
| 608 | |
Sean Hefty | 53d0bd1 | 2011-05-24 08:33:46 -0700 | [diff] [blame] | 609 | struct xrcd_table_entry { |
| 610 | struct rb_node node; |
| 611 | struct ib_xrcd *xrcd; |
| 612 | struct inode *inode; |
| 613 | }; |
| 614 | |
| 615 | static int xrcd_table_insert(struct ib_uverbs_device *dev, |
| 616 | struct inode *inode, |
| 617 | struct ib_xrcd *xrcd) |
| 618 | { |
| 619 | struct xrcd_table_entry *entry, *scan; |
| 620 | struct rb_node **p = &dev->xrcd_tree.rb_node; |
| 621 | struct rb_node *parent = NULL; |
| 622 | |
| 623 | entry = kmalloc(sizeof *entry, GFP_KERNEL); |
| 624 | if (!entry) |
| 625 | return -ENOMEM; |
| 626 | |
| 627 | entry->xrcd = xrcd; |
| 628 | entry->inode = inode; |
| 629 | |
| 630 | while (*p) { |
| 631 | parent = *p; |
| 632 | scan = rb_entry(parent, struct xrcd_table_entry, node); |
| 633 | |
| 634 | if (inode < scan->inode) { |
| 635 | p = &(*p)->rb_left; |
| 636 | } else if (inode > scan->inode) { |
| 637 | p = &(*p)->rb_right; |
| 638 | } else { |
| 639 | kfree(entry); |
| 640 | return -EEXIST; |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | rb_link_node(&entry->node, parent, p); |
| 645 | rb_insert_color(&entry->node, &dev->xrcd_tree); |
| 646 | igrab(inode); |
| 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, |
| 651 | struct inode *inode) |
| 652 | { |
| 653 | struct xrcd_table_entry *entry; |
| 654 | struct rb_node *p = dev->xrcd_tree.rb_node; |
| 655 | |
| 656 | while (p) { |
| 657 | entry = rb_entry(p, struct xrcd_table_entry, node); |
| 658 | |
| 659 | if (inode < entry->inode) |
| 660 | p = p->rb_left; |
| 661 | else if (inode > entry->inode) |
| 662 | p = p->rb_right; |
| 663 | else |
| 664 | return entry; |
| 665 | } |
| 666 | |
| 667 | return NULL; |
| 668 | } |
| 669 | |
| 670 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) |
| 671 | { |
| 672 | struct xrcd_table_entry *entry; |
| 673 | |
| 674 | entry = xrcd_table_search(dev, inode); |
| 675 | if (!entry) |
| 676 | return NULL; |
| 677 | |
| 678 | return entry->xrcd; |
| 679 | } |
| 680 | |
| 681 | static void xrcd_table_delete(struct ib_uverbs_device *dev, |
| 682 | struct inode *inode) |
| 683 | { |
| 684 | struct xrcd_table_entry *entry; |
| 685 | |
| 686 | entry = xrcd_table_search(dev, inode); |
| 687 | if (entry) { |
| 688 | iput(inode); |
| 689 | rb_erase(&entry->node, &dev->xrcd_tree); |
| 690 | kfree(entry); |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, |
| 695 | const char __user *buf, int in_len, |
| 696 | int out_len) |
| 697 | { |
| 698 | struct ib_uverbs_open_xrcd cmd; |
| 699 | struct ib_uverbs_open_xrcd_resp resp; |
| 700 | struct ib_udata udata; |
| 701 | struct ib_uxrcd_object *obj; |
| 702 | struct ib_xrcd *xrcd = NULL; |
| 703 | struct file *f = NULL; |
| 704 | struct inode *inode = NULL; |
| 705 | int ret = 0; |
| 706 | int new_xrcd = 0; |
| 707 | |
| 708 | if (out_len < sizeof resp) |
| 709 | return -ENOSPC; |
| 710 | |
| 711 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 712 | return -EFAULT; |
| 713 | |
| 714 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 715 | (unsigned long) cmd.response + sizeof resp, |
| 716 | in_len - sizeof cmd, out_len - sizeof resp); |
| 717 | |
| 718 | mutex_lock(&file->device->xrcd_tree_mutex); |
| 719 | |
| 720 | if (cmd.fd != -1) { |
| 721 | /* search for file descriptor */ |
| 722 | f = fget(cmd.fd); |
| 723 | if (!f) { |
| 724 | ret = -EBADF; |
| 725 | goto err_tree_mutex_unlock; |
| 726 | } |
| 727 | |
| 728 | inode = f->f_dentry->d_inode; |
| 729 | if (!inode) { |
| 730 | ret = -EBADF; |
| 731 | goto err_tree_mutex_unlock; |
| 732 | } |
| 733 | |
| 734 | xrcd = find_xrcd(file->device, inode); |
| 735 | if (!xrcd && !(cmd.oflags & O_CREAT)) { |
| 736 | /* no file descriptor. Need CREATE flag */ |
| 737 | ret = -EAGAIN; |
| 738 | goto err_tree_mutex_unlock; |
| 739 | } |
| 740 | |
| 741 | if (xrcd && cmd.oflags & O_EXCL) { |
| 742 | ret = -EINVAL; |
| 743 | goto err_tree_mutex_unlock; |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 748 | if (!obj) { |
| 749 | ret = -ENOMEM; |
| 750 | goto err_tree_mutex_unlock; |
| 751 | } |
| 752 | |
| 753 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_key); |
| 754 | |
| 755 | down_write(&obj->uobject.mutex); |
| 756 | |
| 757 | if (!xrcd) { |
| 758 | xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, |
| 759 | file->ucontext, &udata); |
| 760 | if (IS_ERR(xrcd)) { |
| 761 | ret = PTR_ERR(xrcd); |
| 762 | goto err; |
| 763 | } |
| 764 | |
| 765 | xrcd->inode = inode; |
| 766 | xrcd->device = file->device->ib_dev; |
| 767 | atomic_set(&xrcd->usecnt, 0); |
| 768 | mutex_init(&xrcd->tgt_qp_mutex); |
| 769 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); |
| 770 | new_xrcd = 1; |
| 771 | } |
| 772 | |
| 773 | atomic_set(&obj->refcnt, 0); |
| 774 | obj->uobject.object = xrcd; |
| 775 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); |
| 776 | if (ret) |
| 777 | goto err_idr; |
| 778 | |
| 779 | memset(&resp, 0, sizeof resp); |
| 780 | resp.xrcd_handle = obj->uobject.id; |
| 781 | |
| 782 | if (inode) { |
| 783 | if (new_xrcd) { |
| 784 | /* create new inode/xrcd table entry */ |
| 785 | ret = xrcd_table_insert(file->device, inode, xrcd); |
| 786 | if (ret) |
| 787 | goto err_insert_xrcd; |
| 788 | } |
| 789 | atomic_inc(&xrcd->usecnt); |
| 790 | } |
| 791 | |
| 792 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 793 | &resp, sizeof resp)) { |
| 794 | ret = -EFAULT; |
| 795 | goto err_copy; |
| 796 | } |
| 797 | |
| 798 | if (f) |
| 799 | fput(f); |
| 800 | |
| 801 | mutex_lock(&file->mutex); |
| 802 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); |
| 803 | mutex_unlock(&file->mutex); |
| 804 | |
| 805 | obj->uobject.live = 1; |
| 806 | up_write(&obj->uobject.mutex); |
| 807 | |
| 808 | mutex_unlock(&file->device->xrcd_tree_mutex); |
| 809 | return in_len; |
| 810 | |
| 811 | err_copy: |
| 812 | if (inode) { |
| 813 | if (new_xrcd) |
| 814 | xrcd_table_delete(file->device, inode); |
| 815 | atomic_dec(&xrcd->usecnt); |
| 816 | } |
| 817 | |
| 818 | err_insert_xrcd: |
| 819 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); |
| 820 | |
| 821 | err_idr: |
| 822 | ib_dealloc_xrcd(xrcd); |
| 823 | |
| 824 | err: |
| 825 | put_uobj_write(&obj->uobject); |
| 826 | |
| 827 | err_tree_mutex_unlock: |
| 828 | if (f) |
| 829 | fput(f); |
| 830 | |
| 831 | mutex_unlock(&file->device->xrcd_tree_mutex); |
| 832 | |
| 833 | return ret; |
| 834 | } |
| 835 | |
| 836 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, |
| 837 | const char __user *buf, int in_len, |
| 838 | int out_len) |
| 839 | { |
| 840 | struct ib_uverbs_close_xrcd cmd; |
| 841 | struct ib_uobject *uobj; |
| 842 | struct ib_xrcd *xrcd = NULL; |
| 843 | struct inode *inode = NULL; |
| 844 | struct ib_uxrcd_object *obj; |
| 845 | int live; |
| 846 | int ret = 0; |
| 847 | |
| 848 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 849 | return -EFAULT; |
| 850 | |
| 851 | mutex_lock(&file->device->xrcd_tree_mutex); |
| 852 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); |
| 853 | if (!uobj) { |
| 854 | ret = -EINVAL; |
| 855 | goto out; |
| 856 | } |
| 857 | |
| 858 | xrcd = uobj->object; |
| 859 | inode = xrcd->inode; |
| 860 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); |
| 861 | if (atomic_read(&obj->refcnt)) { |
| 862 | put_uobj_write(uobj); |
| 863 | ret = -EBUSY; |
| 864 | goto out; |
| 865 | } |
| 866 | |
| 867 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { |
| 868 | ret = ib_dealloc_xrcd(uobj->object); |
| 869 | if (!ret) |
| 870 | uobj->live = 0; |
| 871 | } |
| 872 | |
| 873 | live = uobj->live; |
| 874 | if (inode && ret) |
| 875 | atomic_inc(&xrcd->usecnt); |
| 876 | |
| 877 | put_uobj_write(uobj); |
| 878 | |
| 879 | if (ret) |
| 880 | goto out; |
| 881 | |
| 882 | if (inode && !live) |
| 883 | xrcd_table_delete(file->device, inode); |
| 884 | |
| 885 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); |
| 886 | mutex_lock(&file->mutex); |
| 887 | list_del(&uobj->list); |
| 888 | mutex_unlock(&file->mutex); |
| 889 | |
| 890 | put_uobj(uobj); |
| 891 | ret = in_len; |
| 892 | |
| 893 | out: |
| 894 | mutex_unlock(&file->device->xrcd_tree_mutex); |
| 895 | return ret; |
| 896 | } |
| 897 | |
| 898 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, |
| 899 | struct ib_xrcd *xrcd) |
| 900 | { |
| 901 | struct inode *inode; |
| 902 | |
| 903 | inode = xrcd->inode; |
| 904 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) |
| 905 | return; |
| 906 | |
| 907 | ib_dealloc_xrcd(xrcd); |
| 908 | |
| 909 | if (inode) |
| 910 | xrcd_table_delete(dev, inode); |
| 911 | } |
| 912 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 913 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
| 914 | const char __user *buf, int in_len, |
| 915 | int out_len) |
| 916 | { |
| 917 | struct ib_uverbs_reg_mr cmd; |
| 918 | struct ib_uverbs_reg_mr_resp resp; |
| 919 | struct ib_udata udata; |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 920 | struct ib_uobject *uobj; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 921 | struct ib_pd *pd; |
| 922 | struct ib_mr *mr; |
| 923 | int ret; |
| 924 | |
| 925 | if (out_len < sizeof resp) |
| 926 | return -ENOSPC; |
| 927 | |
| 928 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 929 | return -EFAULT; |
| 930 | |
| 931 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 932 | (unsigned long) cmd.response + sizeof resp, |
| 933 | in_len - sizeof cmd, out_len - sizeof resp); |
| 934 | |
| 935 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| 936 | return -EINVAL; |
| 937 | |
Roland Dreier | f575394 | 2005-10-03 09:18:02 -0700 | [diff] [blame] | 938 | /* |
| 939 | * Local write permission is required if remote write or |
| 940 | * remote atomic permission is also requested. |
| 941 | */ |
| 942 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && |
| 943 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) |
| 944 | return -EINVAL; |
| 945 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 946 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 947 | if (!uobj) |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 948 | return -ENOMEM; |
| 949 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 950 | init_uobj(uobj, 0, file->ucontext, &mr_lock_key); |
| 951 | down_write(&uobj->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 952 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 953 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
Roland Dreier | aaf1aef | 2007-02-22 13:16:51 -0800 | [diff] [blame] | 954 | if (!pd) { |
| 955 | ret = -EINVAL; |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 956 | goto err_free; |
Roland Dreier | aaf1aef | 2007-02-22 13:16:51 -0800 | [diff] [blame] | 957 | } |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 958 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 959 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
| 960 | cmd.access_flags, &udata); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 961 | if (IS_ERR(mr)) { |
| 962 | ret = PTR_ERR(mr); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 963 | goto err_put; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 964 | } |
| 965 | |
| 966 | mr->device = pd->device; |
| 967 | mr->pd = pd; |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 968 | mr->uobject = uobj; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 969 | atomic_inc(&pd->usecnt); |
| 970 | atomic_set(&mr->usecnt, 0); |
| 971 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 972 | uobj->object = mr; |
| 973 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 974 | if (ret) |
| 975 | goto err_unreg; |
| 976 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 977 | memset(&resp, 0, sizeof resp); |
| 978 | resp.lkey = mr->lkey; |
| 979 | resp.rkey = mr->rkey; |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 980 | resp.mr_handle = uobj->id; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 981 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 982 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 983 | &resp, sizeof resp)) { |
| 984 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 985 | goto err_copy; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 986 | } |
| 987 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 988 | put_pd_read(pd); |
| 989 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 990 | mutex_lock(&file->mutex); |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 991 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 992 | mutex_unlock(&file->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 993 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 994 | uobj->live = 1; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 995 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 996 | up_write(&uobj->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 997 | |
| 998 | return in_len; |
| 999 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1000 | err_copy: |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 1001 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1002 | |
| 1003 | err_unreg: |
| 1004 | ib_dereg_mr(mr); |
| 1005 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1006 | err_put: |
| 1007 | put_pd_read(pd); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1008 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1009 | err_free: |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 1010 | put_uobj_write(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1011 | return ret; |
| 1012 | } |
| 1013 | |
| 1014 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
| 1015 | const char __user *buf, int in_len, |
| 1016 | int out_len) |
| 1017 | { |
| 1018 | struct ib_uverbs_dereg_mr cmd; |
| 1019 | struct ib_mr *mr; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1020 | struct ib_uobject *uobj; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1021 | int ret = -EINVAL; |
| 1022 | |
| 1023 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1024 | return -EFAULT; |
| 1025 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1026 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
| 1027 | if (!uobj) |
| 1028 | return -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1029 | |
Roland Dreier | f7c6a7b | 2007-03-04 16:15:11 -0800 | [diff] [blame] | 1030 | mr = uobj->object; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1031 | |
| 1032 | ret = ib_dereg_mr(mr); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1033 | if (!ret) |
| 1034 | uobj->live = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1035 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1036 | put_uobj_write(uobj); |
| 1037 | |
| 1038 | if (ret) |
| 1039 | return ret; |
| 1040 | |
| 1041 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1042 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1043 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1044 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1045 | mutex_unlock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1046 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1047 | put_uobj(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1048 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1049 | return in_len; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1050 | } |
| 1051 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1052 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
| 1053 | const char __user *buf, int in_len, |
| 1054 | int out_len) |
| 1055 | { |
| 1056 | struct ib_uverbs_create_comp_channel cmd; |
| 1057 | struct ib_uverbs_create_comp_channel_resp resp; |
| 1058 | struct file *filp; |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 1059 | int ret; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1060 | |
| 1061 | if (out_len < sizeof resp) |
| 1062 | return -ENOSPC; |
| 1063 | |
| 1064 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1065 | return -EFAULT; |
| 1066 | |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 1067 | ret = get_unused_fd(); |
| 1068 | if (ret < 0) |
| 1069 | return ret; |
| 1070 | resp.fd = ret; |
| 1071 | |
| 1072 | filp = ib_uverbs_alloc_event_file(file, 0); |
| 1073 | if (IS_ERR(filp)) { |
| 1074 | put_unused_fd(resp.fd); |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1075 | return PTR_ERR(filp); |
Al Viro | b1e4594 | 2010-01-18 01:38:00 -0500 | [diff] [blame] | 1076 | } |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1077 | |
| 1078 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1079 | &resp, sizeof resp)) { |
| 1080 | put_unused_fd(resp.fd); |
| 1081 | fput(filp); |
| 1082 | return -EFAULT; |
| 1083 | } |
| 1084 | |
| 1085 | fd_install(resp.fd, filp); |
| 1086 | return in_len; |
| 1087 | } |
| 1088 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1089 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
| 1090 | const char __user *buf, int in_len, |
| 1091 | int out_len) |
| 1092 | { |
| 1093 | struct ib_uverbs_create_cq cmd; |
| 1094 | struct ib_uverbs_create_cq_resp resp; |
| 1095 | struct ib_udata udata; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1096 | struct ib_ucq_object *obj; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1097 | struct ib_uverbs_event_file *ev_file = NULL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1098 | struct ib_cq *cq; |
| 1099 | int ret; |
| 1100 | |
| 1101 | if (out_len < sizeof resp) |
| 1102 | return -ENOSPC; |
| 1103 | |
| 1104 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1105 | return -EFAULT; |
| 1106 | |
| 1107 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 1108 | (unsigned long) cmd.response + sizeof resp, |
| 1109 | in_len - sizeof cmd, out_len - sizeof resp); |
| 1110 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1111 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1112 | return -EINVAL; |
| 1113 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1114 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 1115 | if (!obj) |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1116 | return -ENOMEM; |
| 1117 | |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 1118 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_key); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1119 | down_write(&obj->uobject.mutex); |
| 1120 | |
Jack Morgenstein | ac4e7b3 | 2006-01-06 16:43:14 -0800 | [diff] [blame] | 1121 | if (cmd.comp_channel >= 0) { |
| 1122 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); |
| 1123 | if (!ev_file) { |
| 1124 | ret = -EINVAL; |
| 1125 | goto err; |
| 1126 | } |
| 1127 | } |
| 1128 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1129 | obj->uverbs_file = file; |
| 1130 | obj->comp_events_reported = 0; |
| 1131 | obj->async_events_reported = 0; |
| 1132 | INIT_LIST_HEAD(&obj->comp_list); |
| 1133 | INIT_LIST_HEAD(&obj->async_list); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1134 | |
| 1135 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, |
Michael S. Tsirkin | f4fd0b2 | 2007-05-03 13:48:47 +0300 | [diff] [blame] | 1136 | cmd.comp_vector, |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1137 | file->ucontext, &udata); |
| 1138 | if (IS_ERR(cq)) { |
| 1139 | ret = PTR_ERR(cq); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1140 | goto err_file; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | cq->device = file->device->ib_dev; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1144 | cq->uobject = &obj->uobject; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1145 | cq->comp_handler = ib_uverbs_comp_handler; |
| 1146 | cq->event_handler = ib_uverbs_cq_event_handler; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1147 | cq->cq_context = ev_file; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1148 | atomic_set(&cq->usecnt, 0); |
| 1149 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1150 | obj->uobject.object = cq; |
| 1151 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1152 | if (ret) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1153 | goto err_free; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1154 | |
| 1155 | memset(&resp, 0, sizeof resp); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1156 | resp.cq_handle = obj->uobject.id; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1157 | resp.cqe = cq->cqe; |
| 1158 | |
| 1159 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1160 | &resp, sizeof resp)) { |
| 1161 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1162 | goto err_copy; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1163 | } |
| 1164 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1165 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1166 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1167 | mutex_unlock(&file->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1168 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1169 | obj->uobject.live = 1; |
| 1170 | |
| 1171 | up_write(&obj->uobject.mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1172 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1173 | return in_len; |
| 1174 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1175 | err_copy: |
| 1176 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1177 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1178 | err_free: |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1179 | ib_destroy_cq(cq); |
| 1180 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1181 | err_file: |
Jack Morgenstein | ac4e7b3 | 2006-01-06 16:43:14 -0800 | [diff] [blame] | 1182 | if (ev_file) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1183 | ib_uverbs_release_ucq(file, ev_file, obj); |
| 1184 | |
| 1185 | err: |
| 1186 | put_uobj_write(&obj->uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1187 | return ret; |
| 1188 | } |
| 1189 | |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 1190 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
| 1191 | const char __user *buf, int in_len, |
| 1192 | int out_len) |
| 1193 | { |
| 1194 | struct ib_uverbs_resize_cq cmd; |
| 1195 | struct ib_uverbs_resize_cq_resp resp; |
| 1196 | struct ib_udata udata; |
| 1197 | struct ib_cq *cq; |
| 1198 | int ret = -EINVAL; |
| 1199 | |
| 1200 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1201 | return -EFAULT; |
| 1202 | |
| 1203 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 1204 | (unsigned long) cmd.response + sizeof resp, |
| 1205 | in_len - sizeof cmd, out_len - sizeof resp); |
| 1206 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 1207 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1208 | if (!cq) |
| 1209 | return -EINVAL; |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 1210 | |
| 1211 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); |
| 1212 | if (ret) |
| 1213 | goto out; |
| 1214 | |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 1215 | resp.cqe = cq->cqe; |
| 1216 | |
| 1217 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
Ralph Campbell | 64f817b | 2006-09-22 15:22:24 -0700 | [diff] [blame] | 1218 | &resp, sizeof resp.cqe)) |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 1219 | ret = -EFAULT; |
| 1220 | |
| 1221 | out: |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1222 | put_cq_read(cq); |
Roland Dreier | 33b9b3e | 2006-01-30 14:29:21 -0800 | [diff] [blame] | 1223 | |
| 1224 | return ret ? ret : in_len; |
| 1225 | } |
| 1226 | |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1227 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
| 1228 | { |
| 1229 | struct ib_uverbs_wc tmp; |
| 1230 | |
| 1231 | tmp.wr_id = wc->wr_id; |
| 1232 | tmp.status = wc->status; |
| 1233 | tmp.opcode = wc->opcode; |
| 1234 | tmp.vendor_err = wc->vendor_err; |
| 1235 | tmp.byte_len = wc->byte_len; |
| 1236 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; |
| 1237 | tmp.qp_num = wc->qp->qp_num; |
| 1238 | tmp.src_qp = wc->src_qp; |
| 1239 | tmp.wc_flags = wc->wc_flags; |
| 1240 | tmp.pkey_index = wc->pkey_index; |
| 1241 | tmp.slid = wc->slid; |
| 1242 | tmp.sl = wc->sl; |
| 1243 | tmp.dlid_path_bits = wc->dlid_path_bits; |
| 1244 | tmp.port_num = wc->port_num; |
| 1245 | tmp.reserved = 0; |
| 1246 | |
| 1247 | if (copy_to_user(dest, &tmp, sizeof tmp)) |
| 1248 | return -EFAULT; |
| 1249 | |
| 1250 | return 0; |
| 1251 | } |
| 1252 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1253 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
| 1254 | const char __user *buf, int in_len, |
| 1255 | int out_len) |
| 1256 | { |
| 1257 | struct ib_uverbs_poll_cq cmd; |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1258 | struct ib_uverbs_poll_cq_resp resp; |
| 1259 | u8 __user *header_ptr; |
| 1260 | u8 __user *data_ptr; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1261 | struct ib_cq *cq; |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1262 | struct ib_wc wc; |
| 1263 | int ret; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1264 | |
| 1265 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1266 | return -EFAULT; |
| 1267 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 1268 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1269 | if (!cq) |
| 1270 | return -EINVAL; |
| 1271 | |
| 1272 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
| 1273 | header_ptr = (void __user *)(unsigned long) cmd.response; |
| 1274 | data_ptr = header_ptr + sizeof resp; |
| 1275 | |
| 1276 | memset(&resp, 0, sizeof resp); |
| 1277 | while (resp.count < cmd.ne) { |
| 1278 | ret = ib_poll_cq(cq, 1, &wc); |
| 1279 | if (ret < 0) |
| 1280 | goto out_put; |
| 1281 | if (!ret) |
| 1282 | break; |
| 1283 | |
| 1284 | ret = copy_wc_to_user(data_ptr, &wc); |
| 1285 | if (ret) |
| 1286 | goto out_put; |
| 1287 | |
| 1288 | data_ptr += sizeof(struct ib_uverbs_wc); |
| 1289 | ++resp.count; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1290 | } |
| 1291 | |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1292 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1293 | ret = -EFAULT; |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1294 | goto out_put; |
| 1295 | } |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1296 | |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1297 | ret = in_len; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1298 | |
Dan Carpenter | 7182afe | 2010-10-13 09:13:12 +0000 | [diff] [blame] | 1299 | out_put: |
| 1300 | put_cq_read(cq); |
| 1301 | return ret; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, |
| 1305 | const char __user *buf, int in_len, |
| 1306 | int out_len) |
| 1307 | { |
| 1308 | struct ib_uverbs_req_notify_cq cmd; |
| 1309 | struct ib_cq *cq; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1310 | |
| 1311 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1312 | return -EFAULT; |
| 1313 | |
Roland Dreier | 1ccf6aa | 2006-09-22 15:17:20 -0700 | [diff] [blame] | 1314 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
Roland Dreier | ab10867 | 2006-09-22 15:17:19 -0700 | [diff] [blame] | 1315 | if (!cq) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1316 | return -EINVAL; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1317 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1318 | ib_req_notify_cq(cq, cmd.solicited_only ? |
| 1319 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); |
| 1320 | |
Roland Dreier | ab10867 | 2006-09-22 15:17:19 -0700 | [diff] [blame] | 1321 | put_cq_read(cq); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1322 | |
| 1323 | return in_len; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1324 | } |
| 1325 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1326 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
| 1327 | const char __user *buf, int in_len, |
| 1328 | int out_len) |
| 1329 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1330 | struct ib_uverbs_destroy_cq cmd; |
| 1331 | struct ib_uverbs_destroy_cq_resp resp; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1332 | struct ib_uobject *uobj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1333 | struct ib_cq *cq; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1334 | struct ib_ucq_object *obj; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 1335 | struct ib_uverbs_event_file *ev_file; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1336 | int ret = -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1337 | |
| 1338 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1339 | return -EFAULT; |
| 1340 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1341 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
| 1342 | if (!uobj) |
| 1343 | return -EINVAL; |
| 1344 | cq = uobj->object; |
| 1345 | ev_file = cq->cq_context; |
| 1346 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1347 | |
| 1348 | ret = ib_destroy_cq(cq); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1349 | if (!ret) |
| 1350 | uobj->live = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1351 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1352 | put_uobj_write(uobj); |
| 1353 | |
| 1354 | if (ret) |
| 1355 | return ret; |
| 1356 | |
| 1357 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1358 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1359 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1360 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1361 | mutex_unlock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1362 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1363 | ib_uverbs_release_ucq(file, ev_file, obj); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1364 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1365 | memset(&resp, 0, sizeof resp); |
| 1366 | resp.comp_events_reported = obj->comp_events_reported; |
| 1367 | resp.async_events_reported = obj->async_events_reported; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1368 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1369 | put_uobj(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1370 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1371 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1372 | &resp, sizeof resp)) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1373 | return -EFAULT; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1374 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1375 | return in_len; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1376 | } |
| 1377 | |
| 1378 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, |
| 1379 | const char __user *buf, int in_len, |
| 1380 | int out_len) |
| 1381 | { |
| 1382 | struct ib_uverbs_create_qp cmd; |
| 1383 | struct ib_uverbs_create_qp_resp resp; |
| 1384 | struct ib_udata udata; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1385 | struct ib_uqp_object *obj; |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1386 | struct ib_device *device; |
| 1387 | struct ib_pd *pd = NULL; |
| 1388 | struct ib_xrcd *xrcd = NULL; |
| 1389 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
| 1390 | struct ib_cq *scq = NULL, *rcq = NULL; |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1391 | struct ib_srq *srq = NULL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1392 | struct ib_qp *qp; |
| 1393 | struct ib_qp_init_attr attr; |
| 1394 | int ret; |
| 1395 | |
| 1396 | if (out_len < sizeof resp) |
| 1397 | return -ENOSPC; |
| 1398 | |
| 1399 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1400 | return -EFAULT; |
| 1401 | |
| 1402 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 1403 | (unsigned long) cmd.response + sizeof resp, |
| 1404 | in_len - sizeof cmd, out_len - sizeof resp); |
| 1405 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1406 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 1407 | if (!obj) |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1408 | return -ENOMEM; |
| 1409 | |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 1410 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1411 | down_write(&obj->uevent.uobject.mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1412 | |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1413 | if (cmd.qp_type == IB_QPT_XRC_TGT) { |
| 1414 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); |
| 1415 | if (!xrcd) { |
| 1416 | ret = -EINVAL; |
| 1417 | goto err_put; |
| 1418 | } |
| 1419 | device = xrcd->device; |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1420 | } else { |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1421 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
| 1422 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0); |
| 1423 | if (!pd || !scq) { |
| 1424 | ret = -EINVAL; |
| 1425 | goto err_put; |
| 1426 | } |
| 1427 | |
| 1428 | if (cmd.qp_type == IB_QPT_XRC_INI) { |
| 1429 | cmd.max_recv_wr = cmd.max_recv_sge = 0; |
| 1430 | } else { |
| 1431 | if (cmd.is_srq) { |
| 1432 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
| 1433 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { |
| 1434 | ret = -EINVAL; |
| 1435 | goto err_put; |
| 1436 | } |
| 1437 | } |
| 1438 | rcq = (cmd.recv_cq_handle == cmd.send_cq_handle) ? |
| 1439 | scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1); |
| 1440 | if (!rcq) { |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1441 | ret = -EINVAL; |
| 1442 | goto err_put; |
| 1443 | } |
| 1444 | } |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1445 | device = pd->device; |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1446 | } |
| 1447 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1448 | attr.event_handler = ib_uverbs_qp_event_handler; |
| 1449 | attr.qp_context = file; |
| 1450 | attr.send_cq = scq; |
| 1451 | attr.recv_cq = rcq; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1452 | attr.srq = srq; |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1453 | attr.xrcd = xrcd; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1454 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
| 1455 | attr.qp_type = cmd.qp_type; |
Eli Cohen | b846f25 | 2008-04-16 21:09:27 -0700 | [diff] [blame] | 1456 | attr.create_flags = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1457 | |
| 1458 | attr.cap.max_send_wr = cmd.max_send_wr; |
| 1459 | attr.cap.max_recv_wr = cmd.max_recv_wr; |
| 1460 | attr.cap.max_send_sge = cmd.max_send_sge; |
| 1461 | attr.cap.max_recv_sge = cmd.max_recv_sge; |
| 1462 | attr.cap.max_inline_data = cmd.max_inline_data; |
| 1463 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1464 | obj->uevent.events_reported = 0; |
| 1465 | INIT_LIST_HEAD(&obj->uevent.event_list); |
| 1466 | INIT_LIST_HEAD(&obj->mcast_list); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1467 | |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1468 | if (cmd.qp_type == IB_QPT_XRC_TGT) |
| 1469 | qp = ib_create_qp(pd, &attr); |
| 1470 | else |
| 1471 | qp = device->create_qp(pd, &attr, &udata); |
| 1472 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1473 | if (IS_ERR(qp)) { |
| 1474 | ret = PTR_ERR(qp); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1475 | goto err_put; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1476 | } |
| 1477 | |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1478 | if (cmd.qp_type != IB_QPT_XRC_TGT) { |
Sean Hefty | 0e0ec7e | 2011-08-08 15:31:51 -0700 | [diff] [blame] | 1479 | qp->real_qp = qp; |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1480 | qp->device = device; |
| 1481 | qp->pd = pd; |
| 1482 | qp->send_cq = attr.send_cq; |
| 1483 | qp->recv_cq = attr.recv_cq; |
| 1484 | qp->srq = attr.srq; |
| 1485 | qp->event_handler = attr.event_handler; |
| 1486 | qp->qp_context = attr.qp_context; |
| 1487 | qp->qp_type = attr.qp_type; |
Bernd Schubert | e47e321 | 2012-01-20 18:43:54 +0000 | [diff] [blame] | 1488 | atomic_set(&qp->usecnt, 0); |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1489 | atomic_inc(&pd->usecnt); |
| 1490 | atomic_inc(&attr.send_cq->usecnt); |
| 1491 | if (attr.recv_cq) |
| 1492 | atomic_inc(&attr.recv_cq->usecnt); |
| 1493 | if (attr.srq) |
| 1494 | atomic_inc(&attr.srq->usecnt); |
| 1495 | } |
| 1496 | qp->uobject = &obj->uevent.uobject; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1497 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1498 | obj->uevent.uobject.object = qp; |
| 1499 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1500 | if (ret) |
| 1501 | goto err_destroy; |
| 1502 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1503 | memset(&resp, 0, sizeof resp); |
| 1504 | resp.qpn = qp->qp_num; |
| 1505 | resp.qp_handle = obj->uevent.uobject.id; |
Jack Morgenstein | 77369ed | 2005-11-09 11:26:07 -0800 | [diff] [blame] | 1506 | resp.max_recv_sge = attr.cap.max_recv_sge; |
| 1507 | resp.max_send_sge = attr.cap.max_send_sge; |
| 1508 | resp.max_recv_wr = attr.cap.max_recv_wr; |
| 1509 | resp.max_send_wr = attr.cap.max_send_wr; |
| 1510 | resp.max_inline_data = attr.cap.max_inline_data; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1511 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1512 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1513 | &resp, sizeof resp)) { |
| 1514 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1515 | goto err_copy; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1516 | } |
| 1517 | |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1518 | if (xrcd) |
| 1519 | put_xrcd_read(xrcd_uobj); |
| 1520 | if (pd) |
| 1521 | put_pd_read(pd); |
| 1522 | if (scq) |
| 1523 | put_cq_read(scq); |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1524 | if (rcq && rcq != scq) |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 1525 | put_cq_read(rcq); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1526 | if (srq) |
| 1527 | put_srq_read(srq); |
| 1528 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1529 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1530 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1531 | mutex_unlock(&file->mutex); |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1532 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1533 | obj->uevent.uobject.live = 1; |
| 1534 | |
| 1535 | up_write(&obj->uevent.uobject.mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1536 | |
| 1537 | return in_len; |
| 1538 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1539 | err_copy: |
| 1540 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1541 | |
| 1542 | err_destroy: |
| 1543 | ib_destroy_qp(qp); |
| 1544 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1545 | err_put: |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1546 | if (xrcd) |
| 1547 | put_xrcd_read(xrcd_uobj); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1548 | if (pd) |
| 1549 | put_pd_read(pd); |
| 1550 | if (scq) |
| 1551 | put_cq_read(scq); |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 1552 | if (rcq && rcq != scq) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1553 | put_cq_read(rcq); |
| 1554 | if (srq) |
| 1555 | put_srq_read(srq); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1556 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1557 | put_uobj_write(&obj->uevent.uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1558 | return ret; |
| 1559 | } |
| 1560 | |
Sean Hefty | 42849b2 | 2011-08-11 13:57:43 -0700 | [diff] [blame] | 1561 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
| 1562 | const char __user *buf, int in_len, int out_len) |
| 1563 | { |
| 1564 | struct ib_uverbs_open_qp cmd; |
| 1565 | struct ib_uverbs_create_qp_resp resp; |
| 1566 | struct ib_udata udata; |
| 1567 | struct ib_uqp_object *obj; |
| 1568 | struct ib_xrcd *xrcd; |
| 1569 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
| 1570 | struct ib_qp *qp; |
| 1571 | struct ib_qp_open_attr attr; |
| 1572 | int ret; |
| 1573 | |
| 1574 | if (out_len < sizeof resp) |
| 1575 | return -ENOSPC; |
| 1576 | |
| 1577 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1578 | return -EFAULT; |
| 1579 | |
| 1580 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 1581 | (unsigned long) cmd.response + sizeof resp, |
| 1582 | in_len - sizeof cmd, out_len - sizeof resp); |
| 1583 | |
| 1584 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 1585 | if (!obj) |
| 1586 | return -ENOMEM; |
| 1587 | |
| 1588 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key); |
| 1589 | down_write(&obj->uevent.uobject.mutex); |
| 1590 | |
| 1591 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); |
| 1592 | if (!xrcd) { |
| 1593 | ret = -EINVAL; |
| 1594 | goto err_put; |
| 1595 | } |
| 1596 | |
| 1597 | attr.event_handler = ib_uverbs_qp_event_handler; |
| 1598 | attr.qp_context = file; |
| 1599 | attr.qp_num = cmd.qpn; |
| 1600 | attr.qp_type = cmd.qp_type; |
| 1601 | |
| 1602 | obj->uevent.events_reported = 0; |
| 1603 | INIT_LIST_HEAD(&obj->uevent.event_list); |
| 1604 | INIT_LIST_HEAD(&obj->mcast_list); |
| 1605 | |
| 1606 | qp = ib_open_qp(xrcd, &attr); |
| 1607 | if (IS_ERR(qp)) { |
| 1608 | ret = PTR_ERR(qp); |
| 1609 | goto err_put; |
| 1610 | } |
| 1611 | |
| 1612 | qp->uobject = &obj->uevent.uobject; |
| 1613 | |
| 1614 | obj->uevent.uobject.object = qp; |
| 1615 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
| 1616 | if (ret) |
| 1617 | goto err_destroy; |
| 1618 | |
| 1619 | memset(&resp, 0, sizeof resp); |
| 1620 | resp.qpn = qp->qp_num; |
| 1621 | resp.qp_handle = obj->uevent.uobject.id; |
| 1622 | |
| 1623 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1624 | &resp, sizeof resp)) { |
| 1625 | ret = -EFAULT; |
| 1626 | goto err_remove; |
| 1627 | } |
| 1628 | |
| 1629 | put_xrcd_read(xrcd_uobj); |
| 1630 | |
| 1631 | mutex_lock(&file->mutex); |
| 1632 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
| 1633 | mutex_unlock(&file->mutex); |
| 1634 | |
| 1635 | obj->uevent.uobject.live = 1; |
| 1636 | |
| 1637 | up_write(&obj->uevent.uobject.mutex); |
| 1638 | |
| 1639 | return in_len; |
| 1640 | |
| 1641 | err_remove: |
| 1642 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
| 1643 | |
| 1644 | err_destroy: |
| 1645 | ib_destroy_qp(qp); |
| 1646 | |
| 1647 | err_put: |
| 1648 | put_xrcd_read(xrcd_uobj); |
| 1649 | put_uobj_write(&obj->uevent.uobject); |
| 1650 | return ret; |
| 1651 | } |
| 1652 | |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1653 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
| 1654 | const char __user *buf, int in_len, |
| 1655 | int out_len) |
| 1656 | { |
| 1657 | struct ib_uverbs_query_qp cmd; |
| 1658 | struct ib_uverbs_query_qp_resp resp; |
| 1659 | struct ib_qp *qp; |
| 1660 | struct ib_qp_attr *attr; |
| 1661 | struct ib_qp_init_attr *init_attr; |
| 1662 | int ret; |
| 1663 | |
| 1664 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1665 | return -EFAULT; |
| 1666 | |
| 1667 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| 1668 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); |
| 1669 | if (!attr || !init_attr) { |
| 1670 | ret = -ENOMEM; |
| 1671 | goto out; |
| 1672 | } |
| 1673 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1674 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
| 1675 | if (!qp) { |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1676 | ret = -EINVAL; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1677 | goto out; |
| 1678 | } |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1679 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1680 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); |
| 1681 | |
| 1682 | put_qp_read(qp); |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1683 | |
| 1684 | if (ret) |
| 1685 | goto out; |
| 1686 | |
| 1687 | memset(&resp, 0, sizeof resp); |
| 1688 | |
| 1689 | resp.qp_state = attr->qp_state; |
| 1690 | resp.cur_qp_state = attr->cur_qp_state; |
| 1691 | resp.path_mtu = attr->path_mtu; |
| 1692 | resp.path_mig_state = attr->path_mig_state; |
| 1693 | resp.qkey = attr->qkey; |
| 1694 | resp.rq_psn = attr->rq_psn; |
| 1695 | resp.sq_psn = attr->sq_psn; |
| 1696 | resp.dest_qp_num = attr->dest_qp_num; |
| 1697 | resp.qp_access_flags = attr->qp_access_flags; |
| 1698 | resp.pkey_index = attr->pkey_index; |
| 1699 | resp.alt_pkey_index = attr->alt_pkey_index; |
Jack Morgenstein | 0b26c88 | 2006-10-25 12:54:20 +0200 | [diff] [blame] | 1700 | resp.sq_draining = attr->sq_draining; |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1701 | resp.max_rd_atomic = attr->max_rd_atomic; |
| 1702 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; |
| 1703 | resp.min_rnr_timer = attr->min_rnr_timer; |
| 1704 | resp.port_num = attr->port_num; |
| 1705 | resp.timeout = attr->timeout; |
| 1706 | resp.retry_cnt = attr->retry_cnt; |
| 1707 | resp.rnr_retry = attr->rnr_retry; |
| 1708 | resp.alt_port_num = attr->alt_port_num; |
| 1709 | resp.alt_timeout = attr->alt_timeout; |
| 1710 | |
| 1711 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); |
| 1712 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; |
| 1713 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; |
| 1714 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; |
| 1715 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; |
| 1716 | resp.dest.dlid = attr->ah_attr.dlid; |
| 1717 | resp.dest.sl = attr->ah_attr.sl; |
| 1718 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; |
| 1719 | resp.dest.static_rate = attr->ah_attr.static_rate; |
| 1720 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); |
| 1721 | resp.dest.port_num = attr->ah_attr.port_num; |
| 1722 | |
| 1723 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); |
| 1724 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; |
| 1725 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; |
| 1726 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; |
| 1727 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; |
| 1728 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; |
| 1729 | resp.alt_dest.sl = attr->alt_ah_attr.sl; |
| 1730 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; |
| 1731 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; |
| 1732 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); |
| 1733 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; |
| 1734 | |
| 1735 | resp.max_send_wr = init_attr->cap.max_send_wr; |
| 1736 | resp.max_recv_wr = init_attr->cap.max_recv_wr; |
| 1737 | resp.max_send_sge = init_attr->cap.max_send_sge; |
| 1738 | resp.max_recv_sge = init_attr->cap.max_recv_sge; |
| 1739 | resp.max_inline_data = init_attr->cap.max_inline_data; |
Dotan Barak | 27d5630 | 2006-03-02 11:25:27 -0800 | [diff] [blame] | 1740 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
Dotan Barak | 7ccc9a2 | 2006-02-13 16:31:25 -0800 | [diff] [blame] | 1741 | |
| 1742 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1743 | &resp, sizeof resp)) |
| 1744 | ret = -EFAULT; |
| 1745 | |
| 1746 | out: |
| 1747 | kfree(attr); |
| 1748 | kfree(init_attr); |
| 1749 | |
| 1750 | return ret ? ret : in_len; |
| 1751 | } |
| 1752 | |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1753 | /* Remove ignored fields set in the attribute mask */ |
| 1754 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) |
| 1755 | { |
| 1756 | switch (qp_type) { |
| 1757 | case IB_QPT_XRC_INI: |
| 1758 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); |
Sean Hefty | b93f3c1 | 2011-05-27 00:00:12 -0700 | [diff] [blame] | 1759 | case IB_QPT_XRC_TGT: |
| 1760 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | |
| 1761 | IB_QP_RNR_RETRY); |
Sean Hefty | 9977f4f | 2011-05-26 08:17:04 -0700 | [diff] [blame] | 1762 | default: |
| 1763 | return mask; |
| 1764 | } |
| 1765 | } |
| 1766 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1767 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
| 1768 | const char __user *buf, int in_len, |
| 1769 | int out_len) |
| 1770 | { |
| 1771 | struct ib_uverbs_modify_qp cmd; |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 1772 | struct ib_udata udata; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1773 | struct ib_qp *qp; |
| 1774 | struct ib_qp_attr *attr; |
| 1775 | int ret; |
| 1776 | |
| 1777 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1778 | return -EFAULT; |
| 1779 | |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 1780 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
| 1781 | out_len); |
| 1782 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1783 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| 1784 | if (!attr) |
| 1785 | return -ENOMEM; |
| 1786 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1787 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
| 1788 | if (!qp) { |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1789 | ret = -EINVAL; |
| 1790 | goto out; |
| 1791 | } |
| 1792 | |
| 1793 | attr->qp_state = cmd.qp_state; |
| 1794 | attr->cur_qp_state = cmd.cur_qp_state; |
| 1795 | attr->path_mtu = cmd.path_mtu; |
| 1796 | attr->path_mig_state = cmd.path_mig_state; |
| 1797 | attr->qkey = cmd.qkey; |
| 1798 | attr->rq_psn = cmd.rq_psn; |
| 1799 | attr->sq_psn = cmd.sq_psn; |
| 1800 | attr->dest_qp_num = cmd.dest_qp_num; |
| 1801 | attr->qp_access_flags = cmd.qp_access_flags; |
| 1802 | attr->pkey_index = cmd.pkey_index; |
Ami Perlmutter | 702b2aa | 2006-03-20 10:08:24 -0800 | [diff] [blame] | 1803 | attr->alt_pkey_index = cmd.alt_pkey_index; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1804 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
| 1805 | attr->max_rd_atomic = cmd.max_rd_atomic; |
| 1806 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; |
| 1807 | attr->min_rnr_timer = cmd.min_rnr_timer; |
| 1808 | attr->port_num = cmd.port_num; |
| 1809 | attr->timeout = cmd.timeout; |
| 1810 | attr->retry_cnt = cmd.retry_cnt; |
| 1811 | attr->rnr_retry = cmd.rnr_retry; |
| 1812 | attr->alt_port_num = cmd.alt_port_num; |
| 1813 | attr->alt_timeout = cmd.alt_timeout; |
| 1814 | |
| 1815 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); |
| 1816 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; |
| 1817 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; |
| 1818 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; |
| 1819 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; |
| 1820 | attr->ah_attr.dlid = cmd.dest.dlid; |
| 1821 | attr->ah_attr.sl = cmd.dest.sl; |
| 1822 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; |
| 1823 | attr->ah_attr.static_rate = cmd.dest.static_rate; |
| 1824 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; |
| 1825 | attr->ah_attr.port_num = cmd.dest.port_num; |
| 1826 | |
| 1827 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); |
| 1828 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; |
| 1829 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; |
| 1830 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; |
| 1831 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; |
| 1832 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; |
| 1833 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; |
| 1834 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; |
| 1835 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; |
| 1836 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; |
| 1837 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; |
| 1838 | |
Sean Hefty | 0e0ec7e | 2011-08-08 15:31:51 -0700 | [diff] [blame] | 1839 | if (qp->real_qp == qp) { |
| 1840 | ret = qp->device->modify_qp(qp, attr, |
| 1841 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); |
| 1842 | } else { |
| 1843 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); |
| 1844 | } |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1845 | |
| 1846 | put_qp_read(qp); |
| 1847 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1848 | if (ret) |
| 1849 | goto out; |
| 1850 | |
| 1851 | ret = in_len; |
| 1852 | |
| 1853 | out: |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1854 | kfree(attr); |
| 1855 | |
| 1856 | return ret; |
| 1857 | } |
| 1858 | |
| 1859 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, |
| 1860 | const char __user *buf, int in_len, |
| 1861 | int out_len) |
| 1862 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1863 | struct ib_uverbs_destroy_qp cmd; |
| 1864 | struct ib_uverbs_destroy_qp_resp resp; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1865 | struct ib_uobject *uobj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1866 | struct ib_qp *qp; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1867 | struct ib_uqp_object *obj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1868 | int ret = -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1869 | |
| 1870 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1871 | return -EFAULT; |
| 1872 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1873 | memset(&resp, 0, sizeof resp); |
| 1874 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1875 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
| 1876 | if (!uobj) |
| 1877 | return -EINVAL; |
| 1878 | qp = uobj->object; |
| 1879 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1880 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1881 | if (!list_empty(&obj->mcast_list)) { |
| 1882 | put_uobj_write(uobj); |
| 1883 | return -EBUSY; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 1884 | } |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1885 | |
| 1886 | ret = ib_destroy_qp(qp); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1887 | if (!ret) |
| 1888 | uobj->live = 0; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1889 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1890 | put_uobj_write(uobj); |
| 1891 | |
| 1892 | if (ret) |
| 1893 | return ret; |
| 1894 | |
| 1895 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1896 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1897 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1898 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 1899 | mutex_unlock(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1900 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1901 | ib_uverbs_release_uevent(file, &obj->uevent); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1902 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1903 | resp.events_reported = obj->uevent.events_reported; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1904 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1905 | put_uobj(uobj); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1906 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1907 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1908 | &resp, sizeof resp)) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1909 | return -EFAULT; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1910 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1911 | return in_len; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1912 | } |
| 1913 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1914 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
Roland Dreier | a74cd4a | 2006-02-13 16:30:49 -0800 | [diff] [blame] | 1915 | const char __user *buf, int in_len, |
| 1916 | int out_len) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1917 | { |
| 1918 | struct ib_uverbs_post_send cmd; |
| 1919 | struct ib_uverbs_post_send_resp resp; |
| 1920 | struct ib_uverbs_send_wr *user_wr; |
| 1921 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; |
| 1922 | struct ib_qp *qp; |
| 1923 | int i, sg_ind; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1924 | int is_ud; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1925 | ssize_t ret = -EINVAL; |
| 1926 | |
| 1927 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1928 | return -EFAULT; |
| 1929 | |
| 1930 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + |
| 1931 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) |
| 1932 | return -EINVAL; |
| 1933 | |
| 1934 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) |
| 1935 | return -EINVAL; |
| 1936 | |
| 1937 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); |
| 1938 | if (!user_wr) |
| 1939 | return -ENOMEM; |
| 1940 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1941 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
| 1942 | if (!qp) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1943 | goto out; |
| 1944 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1945 | is_ud = qp->qp_type == IB_QPT_UD; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1946 | sg_ind = 0; |
| 1947 | last = NULL; |
| 1948 | for (i = 0; i < cmd.wr_count; ++i) { |
| 1949 | if (copy_from_user(user_wr, |
| 1950 | buf + sizeof cmd + i * cmd.wqe_size, |
| 1951 | cmd.wqe_size)) { |
| 1952 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1953 | goto out_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1954 | } |
| 1955 | |
| 1956 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { |
| 1957 | ret = -EINVAL; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1958 | goto out_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1959 | } |
| 1960 | |
| 1961 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| 1962 | user_wr->num_sge * sizeof (struct ib_sge), |
| 1963 | GFP_KERNEL); |
| 1964 | if (!next) { |
| 1965 | ret = -ENOMEM; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1966 | goto out_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1967 | } |
| 1968 | |
| 1969 | if (!last) |
| 1970 | wr = next; |
| 1971 | else |
| 1972 | last->next = next; |
| 1973 | last = next; |
| 1974 | |
| 1975 | next->next = NULL; |
| 1976 | next->wr_id = user_wr->wr_id; |
| 1977 | next->num_sge = user_wr->num_sge; |
| 1978 | next->opcode = user_wr->opcode; |
| 1979 | next->send_flags = user_wr->send_flags; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1980 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1981 | if (is_ud) { |
| 1982 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, |
| 1983 | file->ucontext); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1984 | if (!next->wr.ud.ah) { |
| 1985 | ret = -EINVAL; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 1986 | goto out_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1987 | } |
| 1988 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; |
| 1989 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; |
| 1990 | } else { |
| 1991 | switch (next->opcode) { |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1992 | case IB_WR_RDMA_WRITE_WITH_IMM: |
Roland Dreier | 0f39cf3 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 1993 | next->ex.imm_data = |
| 1994 | (__be32 __force) user_wr->ex.imm_data; |
| 1995 | case IB_WR_RDMA_WRITE: |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1996 | case IB_WR_RDMA_READ: |
| 1997 | next->wr.rdma.remote_addr = |
| 1998 | user_wr->wr.rdma.remote_addr; |
| 1999 | next->wr.rdma.rkey = |
| 2000 | user_wr->wr.rdma.rkey; |
| 2001 | break; |
Roland Dreier | 0f39cf3 | 2008-04-16 21:09:32 -0700 | [diff] [blame] | 2002 | case IB_WR_SEND_WITH_IMM: |
| 2003 | next->ex.imm_data = |
| 2004 | (__be32 __force) user_wr->ex.imm_data; |
| 2005 | break; |
| 2006 | case IB_WR_SEND_WITH_INV: |
| 2007 | next->ex.invalidate_rkey = |
| 2008 | user_wr->ex.invalidate_rkey; |
| 2009 | break; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2010 | case IB_WR_ATOMIC_CMP_AND_SWP: |
| 2011 | case IB_WR_ATOMIC_FETCH_AND_ADD: |
| 2012 | next->wr.atomic.remote_addr = |
| 2013 | user_wr->wr.atomic.remote_addr; |
| 2014 | next->wr.atomic.compare_add = |
| 2015 | user_wr->wr.atomic.compare_add; |
| 2016 | next->wr.atomic.swap = user_wr->wr.atomic.swap; |
| 2017 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; |
| 2018 | break; |
| 2019 | default: |
| 2020 | break; |
| 2021 | } |
| 2022 | } |
| 2023 | |
| 2024 | if (next->num_sge) { |
| 2025 | next->sg_list = (void *) next + |
| 2026 | ALIGN(sizeof *next, sizeof (struct ib_sge)); |
| 2027 | if (copy_from_user(next->sg_list, |
| 2028 | buf + sizeof cmd + |
| 2029 | cmd.wr_count * cmd.wqe_size + |
| 2030 | sg_ind * sizeof (struct ib_sge), |
| 2031 | next->num_sge * sizeof (struct ib_sge))) { |
| 2032 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2033 | goto out_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2034 | } |
| 2035 | sg_ind += next->num_sge; |
| 2036 | } else |
| 2037 | next->sg_list = NULL; |
| 2038 | } |
| 2039 | |
| 2040 | resp.bad_wr = 0; |
Sean Hefty | 0e0ec7e | 2011-08-08 15:31:51 -0700 | [diff] [blame] | 2041 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2042 | if (ret) |
| 2043 | for (next = wr; next; next = next->next) { |
| 2044 | ++resp.bad_wr; |
| 2045 | if (next == bad_wr) |
| 2046 | break; |
| 2047 | } |
| 2048 | |
| 2049 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2050 | &resp, sizeof resp)) |
| 2051 | ret = -EFAULT; |
| 2052 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2053 | out_put: |
| 2054 | put_qp_read(qp); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2055 | |
| 2056 | while (wr) { |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2057 | if (is_ud && wr->wr.ud.ah) |
| 2058 | put_ah_read(wr->wr.ud.ah); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2059 | next = wr->next; |
| 2060 | kfree(wr); |
| 2061 | wr = next; |
| 2062 | } |
| 2063 | |
Krishna Kumar | 1832082 | 2006-06-22 07:47:27 -0700 | [diff] [blame] | 2064 | out: |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2065 | kfree(user_wr); |
| 2066 | |
| 2067 | return ret ? ret : in_len; |
| 2068 | } |
| 2069 | |
| 2070 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, |
| 2071 | int in_len, |
| 2072 | u32 wr_count, |
| 2073 | u32 sge_count, |
| 2074 | u32 wqe_size) |
| 2075 | { |
| 2076 | struct ib_uverbs_recv_wr *user_wr; |
| 2077 | struct ib_recv_wr *wr = NULL, *last, *next; |
| 2078 | int sg_ind; |
| 2079 | int i; |
| 2080 | int ret; |
| 2081 | |
| 2082 | if (in_len < wqe_size * wr_count + |
| 2083 | sge_count * sizeof (struct ib_uverbs_sge)) |
| 2084 | return ERR_PTR(-EINVAL); |
| 2085 | |
| 2086 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) |
| 2087 | return ERR_PTR(-EINVAL); |
| 2088 | |
| 2089 | user_wr = kmalloc(wqe_size, GFP_KERNEL); |
| 2090 | if (!user_wr) |
| 2091 | return ERR_PTR(-ENOMEM); |
| 2092 | |
| 2093 | sg_ind = 0; |
| 2094 | last = NULL; |
| 2095 | for (i = 0; i < wr_count; ++i) { |
| 2096 | if (copy_from_user(user_wr, buf + i * wqe_size, |
| 2097 | wqe_size)) { |
| 2098 | ret = -EFAULT; |
| 2099 | goto err; |
| 2100 | } |
| 2101 | |
| 2102 | if (user_wr->num_sge + sg_ind > sge_count) { |
| 2103 | ret = -EINVAL; |
| 2104 | goto err; |
| 2105 | } |
| 2106 | |
| 2107 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| 2108 | user_wr->num_sge * sizeof (struct ib_sge), |
| 2109 | GFP_KERNEL); |
| 2110 | if (!next) { |
| 2111 | ret = -ENOMEM; |
| 2112 | goto err; |
| 2113 | } |
| 2114 | |
| 2115 | if (!last) |
| 2116 | wr = next; |
| 2117 | else |
| 2118 | last->next = next; |
| 2119 | last = next; |
| 2120 | |
| 2121 | next->next = NULL; |
| 2122 | next->wr_id = user_wr->wr_id; |
| 2123 | next->num_sge = user_wr->num_sge; |
| 2124 | |
| 2125 | if (next->num_sge) { |
| 2126 | next->sg_list = (void *) next + |
| 2127 | ALIGN(sizeof *next, sizeof (struct ib_sge)); |
| 2128 | if (copy_from_user(next->sg_list, |
| 2129 | buf + wr_count * wqe_size + |
| 2130 | sg_ind * sizeof (struct ib_sge), |
| 2131 | next->num_sge * sizeof (struct ib_sge))) { |
| 2132 | ret = -EFAULT; |
| 2133 | goto err; |
| 2134 | } |
| 2135 | sg_ind += next->num_sge; |
| 2136 | } else |
| 2137 | next->sg_list = NULL; |
| 2138 | } |
| 2139 | |
| 2140 | kfree(user_wr); |
| 2141 | return wr; |
| 2142 | |
| 2143 | err: |
| 2144 | kfree(user_wr); |
| 2145 | |
| 2146 | while (wr) { |
| 2147 | next = wr->next; |
| 2148 | kfree(wr); |
| 2149 | wr = next; |
| 2150 | } |
| 2151 | |
| 2152 | return ERR_PTR(ret); |
| 2153 | } |
| 2154 | |
| 2155 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, |
Roland Dreier | a74cd4a | 2006-02-13 16:30:49 -0800 | [diff] [blame] | 2156 | const char __user *buf, int in_len, |
| 2157 | int out_len) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2158 | { |
| 2159 | struct ib_uverbs_post_recv cmd; |
| 2160 | struct ib_uverbs_post_recv_resp resp; |
| 2161 | struct ib_recv_wr *wr, *next, *bad_wr; |
| 2162 | struct ib_qp *qp; |
| 2163 | ssize_t ret = -EINVAL; |
| 2164 | |
| 2165 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2166 | return -EFAULT; |
| 2167 | |
| 2168 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| 2169 | in_len - sizeof cmd, cmd.wr_count, |
| 2170 | cmd.sge_count, cmd.wqe_size); |
| 2171 | if (IS_ERR(wr)) |
| 2172 | return PTR_ERR(wr); |
| 2173 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2174 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
| 2175 | if (!qp) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2176 | goto out; |
| 2177 | |
| 2178 | resp.bad_wr = 0; |
Sean Hefty | 0e0ec7e | 2011-08-08 15:31:51 -0700 | [diff] [blame] | 2179 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2180 | |
| 2181 | put_qp_read(qp); |
| 2182 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2183 | if (ret) |
| 2184 | for (next = wr; next; next = next->next) { |
| 2185 | ++resp.bad_wr; |
| 2186 | if (next == bad_wr) |
| 2187 | break; |
| 2188 | } |
| 2189 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2190 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2191 | &resp, sizeof resp)) |
| 2192 | ret = -EFAULT; |
| 2193 | |
| 2194 | out: |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2195 | while (wr) { |
| 2196 | next = wr->next; |
| 2197 | kfree(wr); |
| 2198 | wr = next; |
| 2199 | } |
| 2200 | |
| 2201 | return ret ? ret : in_len; |
| 2202 | } |
| 2203 | |
| 2204 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, |
Roland Dreier | a74cd4a | 2006-02-13 16:30:49 -0800 | [diff] [blame] | 2205 | const char __user *buf, int in_len, |
| 2206 | int out_len) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2207 | { |
| 2208 | struct ib_uverbs_post_srq_recv cmd; |
| 2209 | struct ib_uverbs_post_srq_recv_resp resp; |
| 2210 | struct ib_recv_wr *wr, *next, *bad_wr; |
| 2211 | struct ib_srq *srq; |
| 2212 | ssize_t ret = -EINVAL; |
| 2213 | |
| 2214 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2215 | return -EFAULT; |
| 2216 | |
| 2217 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| 2218 | in_len - sizeof cmd, cmd.wr_count, |
| 2219 | cmd.sge_count, cmd.wqe_size); |
| 2220 | if (IS_ERR(wr)) |
| 2221 | return PTR_ERR(wr); |
| 2222 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2223 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
| 2224 | if (!srq) |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2225 | goto out; |
| 2226 | |
| 2227 | resp.bad_wr = 0; |
| 2228 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2229 | |
| 2230 | put_srq_read(srq); |
| 2231 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2232 | if (ret) |
| 2233 | for (next = wr; next; next = next->next) { |
| 2234 | ++resp.bad_wr; |
| 2235 | if (next == bad_wr) |
| 2236 | break; |
| 2237 | } |
| 2238 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2239 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2240 | &resp, sizeof resp)) |
| 2241 | ret = -EFAULT; |
| 2242 | |
| 2243 | out: |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2244 | while (wr) { |
| 2245 | next = wr->next; |
| 2246 | kfree(wr); |
| 2247 | wr = next; |
| 2248 | } |
| 2249 | |
| 2250 | return ret ? ret : in_len; |
| 2251 | } |
| 2252 | |
| 2253 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, |
| 2254 | const char __user *buf, int in_len, |
| 2255 | int out_len) |
| 2256 | { |
| 2257 | struct ib_uverbs_create_ah cmd; |
| 2258 | struct ib_uverbs_create_ah_resp resp; |
| 2259 | struct ib_uobject *uobj; |
| 2260 | struct ib_pd *pd; |
| 2261 | struct ib_ah *ah; |
| 2262 | struct ib_ah_attr attr; |
| 2263 | int ret; |
| 2264 | |
| 2265 | if (out_len < sizeof resp) |
| 2266 | return -ENOSPC; |
| 2267 | |
| 2268 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2269 | return -EFAULT; |
| 2270 | |
| 2271 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 2272 | if (!uobj) |
| 2273 | return -ENOMEM; |
| 2274 | |
Roland Dreier | 43db2bc | 2006-07-23 15:16:04 -0700 | [diff] [blame] | 2275 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2276 | down_write(&uobj->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2277 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2278 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
| 2279 | if (!pd) { |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2280 | ret = -EINVAL; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2281 | goto err; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2282 | } |
| 2283 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2284 | attr.dlid = cmd.attr.dlid; |
| 2285 | attr.sl = cmd.attr.sl; |
| 2286 | attr.src_path_bits = cmd.attr.src_path_bits; |
| 2287 | attr.static_rate = cmd.attr.static_rate; |
Ralph Campbell | ea5d4a6 | 2006-01-06 16:24:45 -0800 | [diff] [blame] | 2288 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2289 | attr.port_num = cmd.attr.port_num; |
| 2290 | attr.grh.flow_label = cmd.attr.grh.flow_label; |
| 2291 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; |
| 2292 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; |
| 2293 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; |
| 2294 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
| 2295 | |
| 2296 | ah = ib_create_ah(pd, &attr); |
| 2297 | if (IS_ERR(ah)) { |
| 2298 | ret = PTR_ERR(ah); |
Michael S. Tsirkin | ec924b4 | 2006-07-17 18:20:51 +0300 | [diff] [blame] | 2299 | goto err_put; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2300 | } |
| 2301 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2302 | ah->uobject = uobj; |
| 2303 | uobj->object = ah; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2304 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2305 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2306 | if (ret) |
| 2307 | goto err_destroy; |
| 2308 | |
| 2309 | resp.ah_handle = uobj->id; |
| 2310 | |
| 2311 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2312 | &resp, sizeof resp)) { |
| 2313 | ret = -EFAULT; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2314 | goto err_copy; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2315 | } |
| 2316 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2317 | put_pd_read(pd); |
| 2318 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2319 | mutex_lock(&file->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2320 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2321 | mutex_unlock(&file->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2322 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2323 | uobj->live = 1; |
| 2324 | |
| 2325 | up_write(&uobj->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2326 | |
| 2327 | return in_len; |
| 2328 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2329 | err_copy: |
| 2330 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2331 | |
| 2332 | err_destroy: |
| 2333 | ib_destroy_ah(ah); |
| 2334 | |
Michael S. Tsirkin | ec924b4 | 2006-07-17 18:20:51 +0300 | [diff] [blame] | 2335 | err_put: |
| 2336 | put_pd_read(pd); |
| 2337 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2338 | err: |
| 2339 | put_uobj_write(uobj); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2340 | return ret; |
| 2341 | } |
| 2342 | |
| 2343 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, |
| 2344 | const char __user *buf, int in_len, int out_len) |
| 2345 | { |
| 2346 | struct ib_uverbs_destroy_ah cmd; |
| 2347 | struct ib_ah *ah; |
| 2348 | struct ib_uobject *uobj; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2349 | int ret; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2350 | |
| 2351 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2352 | return -EFAULT; |
| 2353 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2354 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
| 2355 | if (!uobj) |
| 2356 | return -EINVAL; |
| 2357 | ah = uobj->object; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2358 | |
| 2359 | ret = ib_destroy_ah(ah); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2360 | if (!ret) |
| 2361 | uobj->live = 0; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2362 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2363 | put_uobj_write(uobj); |
| 2364 | |
| 2365 | if (ret) |
| 2366 | return ret; |
| 2367 | |
| 2368 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2369 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2370 | mutex_lock(&file->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2371 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2372 | mutex_unlock(&file->mutex); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2373 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2374 | put_uobj(uobj); |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2375 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2376 | return in_len; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 2377 | } |
| 2378 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2379 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
| 2380 | const char __user *buf, int in_len, |
| 2381 | int out_len) |
| 2382 | { |
| 2383 | struct ib_uverbs_attach_mcast cmd; |
| 2384 | struct ib_qp *qp; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2385 | struct ib_uqp_object *obj; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2386 | struct ib_uverbs_mcast_entry *mcast; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2387 | int ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2388 | |
| 2389 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2390 | return -EFAULT; |
| 2391 | |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 2392 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2393 | if (!qp) |
| 2394 | return -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2395 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2396 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2397 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2398 | list_for_each_entry(mcast, &obj->mcast_list, list) |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2399 | if (cmd.mlid == mcast->lid && |
| 2400 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| 2401 | ret = 0; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2402 | goto out_put; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2403 | } |
| 2404 | |
| 2405 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); |
| 2406 | if (!mcast) { |
| 2407 | ret = -ENOMEM; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2408 | goto out_put; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2409 | } |
| 2410 | |
| 2411 | mcast->lid = cmd.mlid; |
| 2412 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); |
| 2413 | |
| 2414 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2415 | if (!ret) |
| 2416 | list_add_tail(&mcast->list, &obj->mcast_list); |
| 2417 | else |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2418 | kfree(mcast); |
| 2419 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2420 | out_put: |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 2421 | put_qp_write(qp); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2422 | |
| 2423 | return ret ? ret : in_len; |
| 2424 | } |
| 2425 | |
| 2426 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, |
| 2427 | const char __user *buf, int in_len, |
| 2428 | int out_len) |
| 2429 | { |
| 2430 | struct ib_uverbs_detach_mcast cmd; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2431 | struct ib_uqp_object *obj; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2432 | struct ib_qp *qp; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2433 | struct ib_uverbs_mcast_entry *mcast; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2434 | int ret = -EINVAL; |
| 2435 | |
| 2436 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2437 | return -EFAULT; |
| 2438 | |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 2439 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2440 | if (!qp) |
| 2441 | return -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2442 | |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2443 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| 2444 | if (ret) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2445 | goto out_put; |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2446 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2447 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2448 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2449 | list_for_each_entry(mcast, &obj->mcast_list, list) |
Jack Morgenstein | f4e4015 | 2005-11-29 16:57:01 -0800 | [diff] [blame] | 2450 | if (cmd.mlid == mcast->lid && |
| 2451 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| 2452 | list_del(&mcast->list); |
| 2453 | kfree(mcast); |
| 2454 | break; |
| 2455 | } |
| 2456 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2457 | out_put: |
Eli Cohen | e214a0f | 2012-01-03 20:36:48 -0800 | [diff] [blame] | 2458 | put_qp_write(qp); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 2459 | |
| 2460 | return ret ? ret : in_len; |
| 2461 | } |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2462 | |
Sean Hefty | c89d1be | 2011-12-06 21:13:10 +0000 | [diff] [blame] | 2463 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
| 2464 | struct ib_uverbs_create_xsrq *cmd, |
| 2465 | struct ib_udata *udata) |
Sean Hefty | 8541f8d | 2011-05-25 17:08:38 -0700 | [diff] [blame] | 2466 | { |
| 2467 | struct ib_uverbs_create_srq_resp resp; |
| 2468 | struct ib_usrq_object *obj; |
| 2469 | struct ib_pd *pd; |
| 2470 | struct ib_srq *srq; |
| 2471 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
| 2472 | struct ib_srq_init_attr attr; |
| 2473 | int ret; |
| 2474 | |
| 2475 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 2476 | if (!obj) |
| 2477 | return -ENOMEM; |
| 2478 | |
| 2479 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_key); |
| 2480 | down_write(&obj->uevent.uobject.mutex); |
| 2481 | |
| 2482 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); |
| 2483 | if (!pd) { |
| 2484 | ret = -EINVAL; |
| 2485 | goto err; |
| 2486 | } |
| 2487 | |
| 2488 | if (cmd->srq_type == IB_SRQT_XRC) { |
| 2489 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); |
| 2490 | if (!attr.ext.xrc.cq) { |
| 2491 | ret = -EINVAL; |
| 2492 | goto err_put_pd; |
| 2493 | } |
| 2494 | |
| 2495 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
| 2496 | if (!attr.ext.xrc.xrcd) { |
| 2497 | ret = -EINVAL; |
| 2498 | goto err_put_cq; |
| 2499 | } |
| 2500 | |
| 2501 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
| 2502 | atomic_inc(&obj->uxrcd->refcnt); |
| 2503 | } |
| 2504 | |
| 2505 | attr.event_handler = ib_uverbs_srq_event_handler; |
| 2506 | attr.srq_context = file; |
| 2507 | attr.srq_type = cmd->srq_type; |
| 2508 | attr.attr.max_wr = cmd->max_wr; |
| 2509 | attr.attr.max_sge = cmd->max_sge; |
| 2510 | attr.attr.srq_limit = cmd->srq_limit; |
| 2511 | |
| 2512 | obj->uevent.events_reported = 0; |
| 2513 | INIT_LIST_HEAD(&obj->uevent.event_list); |
| 2514 | |
| 2515 | srq = pd->device->create_srq(pd, &attr, udata); |
| 2516 | if (IS_ERR(srq)) { |
| 2517 | ret = PTR_ERR(srq); |
| 2518 | goto err_put; |
| 2519 | } |
| 2520 | |
| 2521 | srq->device = pd->device; |
| 2522 | srq->pd = pd; |
| 2523 | srq->srq_type = cmd->srq_type; |
| 2524 | srq->uobject = &obj->uevent.uobject; |
| 2525 | srq->event_handler = attr.event_handler; |
| 2526 | srq->srq_context = attr.srq_context; |
| 2527 | |
| 2528 | if (cmd->srq_type == IB_SRQT_XRC) { |
| 2529 | srq->ext.xrc.cq = attr.ext.xrc.cq; |
| 2530 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; |
| 2531 | atomic_inc(&attr.ext.xrc.cq->usecnt); |
| 2532 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); |
| 2533 | } |
| 2534 | |
| 2535 | atomic_inc(&pd->usecnt); |
| 2536 | atomic_set(&srq->usecnt, 0); |
| 2537 | |
| 2538 | obj->uevent.uobject.object = srq; |
| 2539 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
| 2540 | if (ret) |
| 2541 | goto err_destroy; |
| 2542 | |
| 2543 | memset(&resp, 0, sizeof resp); |
| 2544 | resp.srq_handle = obj->uevent.uobject.id; |
| 2545 | resp.max_wr = attr.attr.max_wr; |
| 2546 | resp.max_sge = attr.attr.max_sge; |
| 2547 | if (cmd->srq_type == IB_SRQT_XRC) |
| 2548 | resp.srqn = srq->ext.xrc.srq_num; |
| 2549 | |
| 2550 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
| 2551 | &resp, sizeof resp)) { |
| 2552 | ret = -EFAULT; |
| 2553 | goto err_copy; |
| 2554 | } |
| 2555 | |
| 2556 | if (cmd->srq_type == IB_SRQT_XRC) { |
| 2557 | put_uobj_read(xrcd_uobj); |
| 2558 | put_cq_read(attr.ext.xrc.cq); |
| 2559 | } |
| 2560 | put_pd_read(pd); |
| 2561 | |
| 2562 | mutex_lock(&file->mutex); |
| 2563 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
| 2564 | mutex_unlock(&file->mutex); |
| 2565 | |
| 2566 | obj->uevent.uobject.live = 1; |
| 2567 | |
| 2568 | up_write(&obj->uevent.uobject.mutex); |
| 2569 | |
| 2570 | return 0; |
| 2571 | |
| 2572 | err_copy: |
| 2573 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
| 2574 | |
| 2575 | err_destroy: |
| 2576 | ib_destroy_srq(srq); |
| 2577 | |
| 2578 | err_put: |
| 2579 | if (cmd->srq_type == IB_SRQT_XRC) { |
| 2580 | atomic_dec(&obj->uxrcd->refcnt); |
| 2581 | put_uobj_read(xrcd_uobj); |
| 2582 | } |
| 2583 | |
| 2584 | err_put_cq: |
| 2585 | if (cmd->srq_type == IB_SRQT_XRC) |
| 2586 | put_cq_read(attr.ext.xrc.cq); |
| 2587 | |
| 2588 | err_put_pd: |
| 2589 | put_pd_read(pd); |
| 2590 | |
| 2591 | err: |
| 2592 | put_uobj_write(&obj->uevent.uobject); |
| 2593 | return ret; |
| 2594 | } |
| 2595 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2596 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
| 2597 | const char __user *buf, int in_len, |
| 2598 | int out_len) |
| 2599 | { |
| 2600 | struct ib_uverbs_create_srq cmd; |
Sean Hefty | 8541f8d | 2011-05-25 17:08:38 -0700 | [diff] [blame] | 2601 | struct ib_uverbs_create_xsrq xcmd; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2602 | struct ib_uverbs_create_srq_resp resp; |
| 2603 | struct ib_udata udata; |
Sean Hefty | 8541f8d | 2011-05-25 17:08:38 -0700 | [diff] [blame] | 2604 | int ret; |
| 2605 | |
| 2606 | if (out_len < sizeof resp) |
| 2607 | return -ENOSPC; |
| 2608 | |
| 2609 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2610 | return -EFAULT; |
| 2611 | |
| 2612 | xcmd.response = cmd.response; |
| 2613 | xcmd.user_handle = cmd.user_handle; |
| 2614 | xcmd.srq_type = IB_SRQT_BASIC; |
| 2615 | xcmd.pd_handle = cmd.pd_handle; |
| 2616 | xcmd.max_wr = cmd.max_wr; |
| 2617 | xcmd.max_sge = cmd.max_sge; |
| 2618 | xcmd.srq_limit = cmd.srq_limit; |
| 2619 | |
| 2620 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 2621 | (unsigned long) cmd.response + sizeof resp, |
| 2622 | in_len - sizeof cmd, out_len - sizeof resp); |
| 2623 | |
| 2624 | ret = __uverbs_create_xsrq(file, &xcmd, &udata); |
| 2625 | if (ret) |
| 2626 | return ret; |
| 2627 | |
| 2628 | return in_len; |
| 2629 | } |
| 2630 | |
| 2631 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, |
| 2632 | const char __user *buf, int in_len, int out_len) |
| 2633 | { |
| 2634 | struct ib_uverbs_create_xsrq cmd; |
| 2635 | struct ib_uverbs_create_srq_resp resp; |
| 2636 | struct ib_udata udata; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2637 | int ret; |
| 2638 | |
| 2639 | if (out_len < sizeof resp) |
| 2640 | return -ENOSPC; |
| 2641 | |
| 2642 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2643 | return -EFAULT; |
| 2644 | |
| 2645 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 2646 | (unsigned long) cmd.response + sizeof resp, |
| 2647 | in_len - sizeof cmd, out_len - sizeof resp); |
| 2648 | |
Sean Hefty | 8541f8d | 2011-05-25 17:08:38 -0700 | [diff] [blame] | 2649 | ret = __uverbs_create_xsrq(file, &cmd, &udata); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2650 | if (ret) |
Sean Hefty | 8541f8d | 2011-05-25 17:08:38 -0700 | [diff] [blame] | 2651 | return ret; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2652 | |
| 2653 | return in_len; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2654 | } |
| 2655 | |
| 2656 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
| 2657 | const char __user *buf, int in_len, |
| 2658 | int out_len) |
| 2659 | { |
| 2660 | struct ib_uverbs_modify_srq cmd; |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 2661 | struct ib_udata udata; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2662 | struct ib_srq *srq; |
| 2663 | struct ib_srq_attr attr; |
| 2664 | int ret; |
| 2665 | |
| 2666 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2667 | return -EFAULT; |
| 2668 | |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 2669 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
| 2670 | out_len); |
| 2671 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2672 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
| 2673 | if (!srq) |
| 2674 | return -EINVAL; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2675 | |
| 2676 | attr.max_wr = cmd.max_wr; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2677 | attr.srq_limit = cmd.srq_limit; |
| 2678 | |
Ralph Campbell | 9bc57e2 | 2006-08-11 14:58:09 -0700 | [diff] [blame] | 2679 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2680 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2681 | put_srq_read(srq); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2682 | |
| 2683 | return ret ? ret : in_len; |
| 2684 | } |
| 2685 | |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2686 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
| 2687 | const char __user *buf, |
| 2688 | int in_len, int out_len) |
| 2689 | { |
| 2690 | struct ib_uverbs_query_srq cmd; |
| 2691 | struct ib_uverbs_query_srq_resp resp; |
| 2692 | struct ib_srq_attr attr; |
| 2693 | struct ib_srq *srq; |
| 2694 | int ret; |
| 2695 | |
| 2696 | if (out_len < sizeof resp) |
| 2697 | return -ENOSPC; |
| 2698 | |
| 2699 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2700 | return -EFAULT; |
| 2701 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2702 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
| 2703 | if (!srq) |
| 2704 | return -EINVAL; |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2705 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2706 | ret = ib_query_srq(srq, &attr); |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2707 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2708 | put_srq_read(srq); |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2709 | |
| 2710 | if (ret) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2711 | return ret; |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2712 | |
| 2713 | memset(&resp, 0, sizeof resp); |
| 2714 | |
| 2715 | resp.max_wr = attr.max_wr; |
| 2716 | resp.max_sge = attr.max_sge; |
| 2717 | resp.srq_limit = attr.srq_limit; |
| 2718 | |
| 2719 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2720 | &resp, sizeof resp)) |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2721 | return -EFAULT; |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2722 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2723 | return in_len; |
Dotan Barak | 8bdb0e8 | 2006-02-13 16:31:57 -0800 | [diff] [blame] | 2724 | } |
| 2725 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2726 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
| 2727 | const char __user *buf, int in_len, |
| 2728 | int out_len) |
| 2729 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2730 | struct ib_uverbs_destroy_srq cmd; |
| 2731 | struct ib_uverbs_destroy_srq_resp resp; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2732 | struct ib_uobject *uobj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2733 | struct ib_srq *srq; |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2734 | struct ib_uevent_object *obj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2735 | int ret = -EINVAL; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2736 | |
| 2737 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 2738 | return -EFAULT; |
| 2739 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2740 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
| 2741 | if (!uobj) |
| 2742 | return -EINVAL; |
| 2743 | srq = uobj->object; |
| 2744 | obj = container_of(uobj, struct ib_uevent_object, uobject); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2745 | |
| 2746 | ret = ib_destroy_srq(srq); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2747 | if (!ret) |
| 2748 | uobj->live = 0; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2749 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2750 | put_uobj_write(uobj); |
| 2751 | |
| 2752 | if (ret) |
| 2753 | return ret; |
| 2754 | |
| 2755 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2756 | |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2757 | mutex_lock(&file->mutex); |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2758 | list_del(&uobj->list); |
Ingo Molnar | 95ed644 | 2006-01-13 14:51:39 -0800 | [diff] [blame] | 2759 | mutex_unlock(&file->mutex); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2760 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2761 | ib_uverbs_release_uevent(file, obj); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2762 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2763 | memset(&resp, 0, sizeof resp); |
| 2764 | resp.events_reported = obj->events_reported; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2765 | |
Roland Dreier | 9ead190 | 2006-06-17 20:44:49 -0700 | [diff] [blame] | 2766 | put_uobj(uobj); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2767 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 2768 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 2769 | &resp, sizeof resp)) |
| 2770 | ret = -EFAULT; |
| 2771 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 2772 | return ret ? ret : in_len; |
| 2773 | } |